Flexible optical film co-extrusion lamp strip and lamp

Abstract

The utility model discloses a flexible optical film co-extrusion lamp strip and a lamp, the flexible optical film co-extrusion lamp strip comprises a lamp strip body, a plurality of LED lamp beads are arranged on the lamp strip body; the flexible optical film is arranged on one side of the lamp strip body; the extruded material is filled between the lamp strip body and the flexible optical film and wraps the lamp strip body and the flexible optical film, and the lamp strip body, the flexible optical film and the extruded material are formed through an integrated co-extrusion process. The flexible optical film and the lamp strip are integrally extruded and molded through the extrusion material, so that a light source emitted by the LED lamp beads on the lamp strip firstly enters the flexible optical film through the extrusion material and then is emitted through the flexible optical film and the extrusion material, and therefore, the light color of the light source passing through the flexible optical film can be changed; meanwhile, the flexible optical film can be adjusted according to different light-emitting requirements, and therefore the requirements for different light-emitting effects are met.

Description

Technical Field

[0001] The utility model relates to the technical field of lamps, and in particular to a flexible optical film co-extruded light strip and a lamp. Background Art

[0002] Silicone extruded LED light strips are another important extension of the silicone extrusion product industry. These fully encapsulated silicone light strips are extruded simultaneously through an extruder. Currently, most silicone extruded LED light strips on the market utilize a single-piece silicone / plastic extrusion wrapping the light strip. This design causes light from the light source in the strip to be refracted directly through the extruded material. This results in a fixed lighting effect and is unable to meet the diverse lighting needs of different users. Utility Model Content

[0003] The embodiment of the present utility model provides a flexible optical film co-extruded light strip and a light fixture, aiming to improve the luminous effect of the light strip and meet different luminous requirements.

[0004] The present invention provides a flexible optical film co-extruded light strip, comprising:

[0005] A light strip body, on which a plurality of LED lamp beads are arranged;

[0006] A flexible optical film is provided on one side of the light strip body;

[0007] The extruded material is filled between the light strip body and the flexible optical film and wraps the light strip body and the flexible optical film. The light strip body, the flexible optical film and the extruded material are formed through an integrated co-extrusion process.

[0008] Furthermore, the extruded material includes a light-transmitting extruded material and a light-absorbing extruded material, the light-transmitting extruded material is formed into a light-transmitting surface, and the light-absorbing extruded material is formed into a light-absorbing surface.

[0009] Furthermore, the light strip body is arranged in a direction where the LED lamp beads face the light-transmitting surface.

[0010] Furthermore, the flexible optical film is arranged in parallel between the light strip body and the light-transmitting surface, and the distance between the flexible optical film and the outer side of the light-transmitting surface is 0.5-2.5 mm.

[0011] Furthermore, the flexible optical film is any one of a single-polarization diffusion film, a double-polarization diffusion film, a stretched diffusion film and a light-concentrating film.

[0012] Furthermore, the extruded material is transparent silicone with a diffusion layer removed, and the flexible optical film is extruded on the surface of the extruded material.

[0013] Furthermore, the thickness of the flexible optical film is 0.05-10 mm.

[0014] Furthermore, the flexible optical film is transparent or foggy.

[0015] Furthermore, the surface pattern of the flexible optical film is any one of smooth, polygonal and circular.

[0016] The embodiment of the present invention further provides a lamp, which adopts the flexible optical film co-extruded light strip as described in any one of the above items.

[0017] The present invention provides a flexible optical film co-extruded light strip and a light fixture, the flexible optical film co-extruded light strip comprising: a light strip body, on which a plurality of LED lamp beads are arranged; a flexible optical film, disposed on one side of the light strip body; an extruded material, filled between the light strip body and the flexible optical film and wrapping the light strip body and the flexible optical film, wherein the light strip body, the flexible optical film, and the extruded material are formed by an integrated co-extrusion process. The present invention uses the extruded material to integrally extrude the flexible optical film and the light strip, thereby changing the light propagation path of the LED lamp beads on the light strip compared to the prior art. That is, the light emitted by the LED lamp beads first passes through the extruded material and is incident on the flexible optical film, and then passes through the flexible optical film and the extruded material to be emitted. In this way, the light color of the light source passing through the flexible optical film is changed, thereby changing the final luminous effect produced by the light strip, thereby improving the luminous effect of the light strip. At the same time, the flexible optical film can be adjusted according to different luminous requirements to meet the requirements of different luminous effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic structural diagram of a flexible optical film co-extruded light strip provided by an embodiment of the present invention;

[0020] Figure 2 An exploded schematic diagram of a flexible optical film co-extruded light strip provided by an embodiment of the present invention;

[0021] Figure 3 A schematic cross-sectional view of a flexible optical film co-extruded light strip provided by an embodiment of the present invention;

[0022] Figure 4A first light-emitting schematic diagram of a flexible optical film in a flexible optical film co-extruded light strip provided by an embodiment of the present invention;

[0023] Figure 5 A second light-emitting schematic diagram of a flexible optical film in a flexible optical film co-extruded light strip provided by an embodiment of the present invention;

[0024] Figure 6 A third light-emitting schematic diagram of a flexible optical film in a flexible optical film co-extruded light strip provided by an embodiment of the present invention;

[0025] Figure 7 This is an example diagram of a flexible optical film in a flexible optical film co-extruded light strip provided by an embodiment of the present invention;

[0026] Figure 8 This is an example diagram of another flexible optical film in a flexible optical film co-extruded light strip provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0029] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0030] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0031] See below Figure 1-Figure 3 The present invention provides a flexible optical film co-extruded light strip, comprising:

[0032] A light strip body 1 , on which a plurality of LED lamp beads 11 are arranged;

[0033] A flexible optical film 2 is provided on one side of the light strip body 1;

[0034] The extruded material 3 is filled between the light strip body 1 and the flexible optical film 2 and wraps the light strip body 1 and the flexible optical film 2. The light strip body 1, the flexible optical film 2 and the extruded material 3 are formed through an integrated co-extrusion process.

[0035] The flexible optical film co-extruded light strip described in this embodiment specifically includes a light strip body 1, a flexible optical film 2, and an extruded material 3. In this embodiment, the flexible optical film 2 and the light strip are extruded into an integral body through the extruded material 3, so that the propagation path of the light source emitted by the LED lamp beads 11 on the light strip is changed compared with the prior art. That is, the light source emitted by the LED lamp beads 11 will first pass through the extruded material 3 and be incident on the flexible optical film 2, and then be emitted through the flexible optical film 2 and the extruded material 3. In this way, the light color of the light source passing through the flexible optical film 2 can be changed, thereby changing the final luminous effect produced by the light strip, thereby improving the luminous effect of the light strip. At the same time, the flexible optical film 2 can be adjusted according to different luminous requirements to meet the needs of different luminous effects.

[0036] In a specific embodiment, the LED lamp beads 11 on the light strip body 1 can be arranged in a single row or multiple rows, and the number of LED lamp beads 11 can be specifically set according to the actual scene requirements. In addition, the flexible optical film co-extruded light strip can be in a rectangular parallelepiped or cylindrical shape after integral extrusion molding, and of course the shape can be set according to actual needs.

[0037] In one embodiment, the extruded material 3 includes a light-transmitting extruded material and a light-absorbing extruded material. The light-transmitting extruded material is formed into a light-transmitting surface, and the light-absorbing extruded material is formed into a light-absorbing surface.

[0038] Furthermore, the light strip body 1 is arranged in a direction where the LED lamp beads 11 face the light-transmitting surface.

[0039] In addition, the flexible optical film 2 is arranged in parallel between the light strip body 1 and the light-transmitting surface, and the distance between the flexible optical film 2 and the outer side of the light-transmitting surface is 0.5-2.5 mm.

[0040] In this embodiment, by using a light-transmitting extrusion material and a light-absorbing extrusion material to integrally extrude the light strip body 1 and the flexible optical film 2, the final flexible optical film co-extruded light strip can have both a light-transmitting surface and a light-absorbing surface. In this way, the light source emitted by the LED lamp beads 11 can be emitted only from the light-transmitting surface, thereby improving the luminous effect. Specifically, in actual applications, the flexible optical film co-extruded light strip is a rectangular light strip. In order to ensure the luminous effect, only one light-transmitting surface can be provided, and the other three surfaces can be light-absorbing surfaces (excluding the two ends of the rectangular light strip). Of course, the number of light-transmitting surfaces can be increased and the number of light-absorbing surfaces can be reduced, for example, the number of light-transmitting surfaces and the number of light-absorbing surfaces can be two, etc.

[0041] For example, the light-transmitting surface can be set directly above, then correspondingly, the light strip body 1 needs to be set towards the light-transmitting surface, and the flexible optical film 2 is set between the light-transmitting surface and the light strip body 1, so that the light emitted by the LED lamp beads 11 on the light strip body 1 can be directly incident on the flexible optical film 2, and then incident on the light-transmitting surface through the flexible optical film 2. Furthermore, it can be understood that the light-transmitting surface and the light-absorbing surface described in this embodiment are not a simple surface, but have a certain thickness. For example, the thickness of the light-transmitting surface can be 0.5-2.5mm, that is, the distance between the inner side of the light-transmitting surface and the outer side of the light-transmitting surface is 0.5-2.5mm, and the inner side of the light-transmitting surface is closely squeezed by the flexible optical film 2, so it can also be said that the distance between the flexible optical film 2 and the outer side of the light-transmitting surface is 0.5-2.5mm.

[0042] Of course, in some optional embodiments, the relative positions of the light-transmitting surface and the light strip body 1 can be adjusted at will. For example, the light strip body 1 can be placed to the lower left or lower right of the light-transmitting surface, or to the side, etc. Regardless of where the light strip body 1 is placed, it will be wrapped by the extruded material 3 and extruded with the flexible optical film 2.

[0043] In one embodiment, the flexible optical film 2 is made of polyimide or polyethylene terephthalate. Polyimide (PI) refers to a type of polymer containing an imide ring (-CO-NR-CO-) on the main chain and is one of the organic polymer materials with the best comprehensive performance. It is resistant to high temperatures of over 400°C and has a long-term operating temperature range of -200 to 300°C. Some of them have no obvious melting point and have high insulation performance. The dielectric constant is 4.0 at 103 Hz and the dielectric loss is only 0.004 to 0.007. Polyethylene terephthalate (PET) is made by transesterifying dimethyl terephthalate with ethylene glycol or by esterifying terephthalic acid with ethylene glycol to synthesize dihydroxyethyl terephthalate, and then performing a condensation reaction. It is a crystalline saturated polyester, a milky white or light yellow, highly crystalline polymer with a smooth and shiny surface. It can be divided into APET, RPET and PETG. PET has excellent physical and mechanical properties over a wide temperature range, with an operating temperature of up to 120°C. It also offers excellent electrical insulation, maintaining good electrical properties even at high temperatures and high frequencies. It also exhibits excellent creep resistance, fatigue resistance, friction resistance, and dimensional stability. This embodiment uses PI and PET as the flexible optical film 2, ensuring that the light strip's luminous effect is enhanced. Of course, other plastic materials can also be used as the flexible optical film 2 in other embodiments.

[0044] In one embodiment, the flexible optical film 2 is any one of a single-bias diffusion film, a double-bias diffusion film, a stretched diffusion film and a light-concentrating film. Figure 4 , single polarization diffusion film (simply referred to as single polarization film) can deflect light to one direction, and can provide a better solution for indoor and outdoor wall washers, blackboard lights and ceiling lights. Figure 5 Double-polarization diffusion film (also referred to as double-polarization film) can deflect light in two directions at the same time, and can provide a good solution for indoor commercial lighting, furniture lighting, etc. Double-polarization diffusion film is an upgrade of single-polarization film. While deflecting the light, it can make the light on the wall more uniform, and can eliminate problems such as poor uniformity or light spots in the lighting area. Figure 6 Stretched diffuser film ensures that light remains constant from 0-180 degrees while controlling the light direction from 90-270 degrees, creating an elliptical or rectangular light spot. When used with products on the Starry Sky Optical Platform, it provides an excellent solution for indoor commercial lighting, office lighting, and furniture lighting. Stretched diffuser film is also layered with a diffuser film. This deflects light and creates a very uniform illumination on the wall, eliminating issues such as uneven illumination or spot lighting. Concentrating film primarily focuses light, enhancing the lighting effect and limiting the angle of light exposure.

[0045] In actual applications, the extruded material is a transparent silicone with a diffusion layer cut off, and the flexible optical film is extruded on the surface of the extruded material. For example, a single-bias diffusion film can be used in combination with a transparent silicone with a diffusion layer cut off, or a double-bias diffusion film can be used in combination with a transparent silicone with a diffusion layer cut off. In some other optional embodiments, the extruded material 3 can also be set to PET (polyethylene terephthalate) or EF (ethylene-vinyl acetate copolymer), and then combined with a double-bias diffusion film. In this way, when the optical film reaches a certain distance from the light-emitting surface, the SMD linear light source application can be realized, or it can be combined with a single-bias diffusion film, so that the wall washing application can be realized directly through flat packaging. In addition, in other application scenarios, a silicone diffusion layer can also be covered on top of the double-bias diffusion film. In this way, the problem of dark areas on both sides of the existing conventional light strip without silicone can be solved. This is because after the double-bias diffusion film is set, the light will deviate toward the two sides of the light strip, which can solve the problem of dark areas on both sides of the light.

[0046] In particular, this embodiment incorporates a flexible optical film 2 into an extruded silicone light strip—that is, a single-, double-, or stretched-type diffuser—to achieve a flexible and bendable effect. Furthermore, based on this flexible and bendable effect, the flexible optical film co-extruded light strip can be applied to scenarios such as indoor lighting design.

[0047] In one embodiment, the thickness of the flexible optical film 2 is 0.05-10 mm.

[0048] Furthermore, the flexible optical film 2 is transparent or foggy.

[0049] Furthermore, the surface pattern of the flexible optical film 2 is any one of smooth, polygonal, and circular.

[0050] In this embodiment, since the light source emitted by the LED lamp beads 11 of the light strip body 1 will pass through the flexible optical film 2, the thickness of the flexible optical film 2 will affect the propagation of the light source. For example, a thicker flexible optical film 2 may cause the light source incident on the light-transmitting surface to be attenuated, resulting in insufficient final luminous brightness, while a thinner flexible optical film 2 may reduce the effect of the flexible optical film 2 and fail to improve the luminous effect of the light strip. Therefore, this embodiment uses a thickness of 0.05-10mm to design the flexible optical film 2 so that it has good bending flexibility and temperature resistance. Specifically, the flexibility of the flexible optical film 2 can be 7-80°. Of course, in order to meet different lighting requirements, for example, some users want the light strip to emit darker light, then the thickness of the flexible optical film 2 can be increased, and for example, some users want the light strip to emit brighter light, then the thickness of the flexible optical film 2 can be reduced.

[0051] In addition, the flexible optical film 2 in this embodiment is transparent or foggy, which can enhance the transmittance of the light source and further improve the luminous effect of the light strip.

[0052] Also, such as Figure 7 and Figure 8 In this embodiment, the surface of the flexible optical film 2 can be polygonal (e.g., hexagonal, pentagonal, triangular, etc.), smooth, or other patterns. Thus, after the light passes through the flexible optical film 2 and exits the light-transmitting surface, the entire light strip can present a corresponding light pattern on the surface of the flexible optical film 2. For example, if the surface of the flexible optical film 2 is hexagonal, then after the light passes through the flexible optical film 2 and exits the light-transmitting surface, a hexagonal light pattern can be displayed accordingly.

[0053] The embodiment of the present invention further provides a lamp, which adopts the flexible optical film co-extruded light strip as described in any one of the above items.

[0054] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of this application, several improvements and modifications can be made to this application, and these improvements and modifications also fall within the scope of protection of the claims of this application.

[0055] It should also be noted that, in this specification, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

Claims

1. A flexible optical film co-extruded light strip, characterized in that: include: A light strip body, on which a plurality of LED lamp beads are arranged; A flexible optical film is provided on one side of the light strip body; The extruded material is filled between the light strip body and the flexible optical film and wraps the light strip body and the flexible optical film. The light strip body, the flexible optical film and the extruded material are formed through an integrated co-extrusion process.

2. The flexible optical film co-extruded light strip according to claim 1, characterized in that: The extruded material includes a light-transmitting extruded material and a light-absorbing extruded material. The light-transmitting extruded material is formed into a light-transmitting surface, and the light-absorbing extruded material is formed into a light-absorbing surface.

3. The flexible optical film co-extruded light strip according to claim 2, characterized in that: The light strip body is arranged in a direction in which the LED lamp beads face the light-transmitting surface.

4. The flexible optical film co-extruded light strip according to claim 3, characterized in that: The flexible optical film is arranged in parallel between the light strip body and the light-transmitting surface, and the distance between the flexible optical film and the outer side of the light-transmitting surface is 0.5-2.5 mm.

5. The flexible optical film co-extruded light strip according to claim 1, characterized in that: The flexible optical film is any one of a single-polarization diffusion film, a double-polarization diffusion film, a stretched diffusion film and a light-concentrating film.

6. The flexible optical film co-extruded light strip according to claim 5, characterized in that: The extruded material is transparent silicone with the diffusion layer removed, and the flexible optical film is extruded on the surface of the extruded material.

7. The flexible optical film co-extruded light strip according to claim 1, characterized in that: The thickness of the flexible optical film is 0.05-10 mm.

8. The flexible optical film co-extruded light strip according to claim 1, characterized in that: The flexible optical film is transparent or foggy.

9. The flexible optical film co-extruded light strip according to claim 1, characterized in that: The surface pattern of the flexible optical film is any one of smooth, polygonal and circular.

10. A lamp, characterized in that: A flexible optical film co-extruded light strip according to any one of claims 1 to 9 is used.

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