Flexible optical film co-extrusion lamp strip and lamp

Abstract

The invention 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 and a plurality of flexible optical films, 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 present invention 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 strip is another important extension of silicone extrusion products. LED silicone extruded light strip is a fully wrapped light strip made of silicone material, where silicone and light strip are extruded together through an extruder. Currently, most silicone extruded LED light strips on the market are made of silicone / plastic material extruded and wrapped in one piece, and this design will cause the light emitted by the light source in the light strip to be directly refracted to the outside through the extruded material 3, which will cause the light effect of the light strip to be fixed and cannot meet the different light requirements of different users. Summary of the invention

[0003] The embodiments of the present invention provide a flexible optical film co-extruded light strip and a light fixture, aiming to improve the light-emitting effect of the light strip and meet different light-emitting requirements.

[0004] An embodiment of 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 arranged 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 by 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-bias diffusion film, a double-bias diffusion film, a stretched diffusion film and a light-condensing 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 misty.

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

[0016] An 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 embodiment of the present invention provides a flexible optical film co-extruded light strip and a lamp, the flexible optical film co-extruded light strip comprises: a light strip body, a plurality of LED lamp beads are arranged on the light strip body; a flexible optical film is arranged on one side of the light strip body; an 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 and the flexible optical film and the extruded material are formed by an integrated co-extrusion process. The embodiment of the present invention extrude the flexible optical film and the light strip as a whole by extruding the material, so that the propagation path of the light source emitted by the LED lamp beads on the light strip is changed compared with the prior art, that is, the light source emitted by the LED lamp beads will first pass through the extruded material to be incident on the flexible optical film, and then pass through the flexible optical film and the extruded material to be emitted, so that the light color of the light source passing through the flexible optical film can be changed, so that the luminous effect finally produced by the light strip can be changed, so that the luminous effect of the light strip can be improved, and at the same time, the flexible optical film can be adjusted according to different luminous requirements, so as 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 accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0019] Figure 1 A schematic diagram of the structure 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 cross-sectional schematic diagram 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 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 another example diagram of a 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0028] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

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

[0030] It should be further understood that the term "and / or" used in the present description 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 embodiment of 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 arranged 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 by 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 to be incident on the flexible optical film 2, and then pass through the flexible optical film 2 and the extruded material 3 to be emitted, so that the light color of the light source passing through the flexible optical film 2 can be changed, thereby changing the luminous effect finally produced by the light strip, so that the luminous effect of the light strip can be improved, and at the same time, the flexible optical film 2 can be adjusted according to different luminous requirements, so as to meet the requirements of different luminous effects.

[0036] In a specific embodiment, the LED lamp beads 11 on the light strip body 1 can be distributed in a single row or in 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 rectangular or cylindrical 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, so that 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 practical 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 set, and the other three surfaces are 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 light-absorbing surfaces are both two, and so on.

[0041] For example, the light-transmitting surface can be set directly above, then correspondingly, the light strip body 1 needs to be set toward 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 irradiated onto the flexible optical film 2, and then incident on the light-transmitting surface through the flexible optical film 2. Further, 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 also be arranged at the lower left or lower right of the light-transmitting surface, or at the side, etc. Regardless of where the light strip body 1 is arranged, it will be wrapped by the extruded material 3 and extruded with the flexible optical film 2.

[0043] In one embodiment, the material of the flexible optical film 2 is polyimide or polyethylene terephthalate. Polyimide (PI for short) 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 more than 400°C, with a long-term use temperature range of -200 to 300°C, some of which have no obvious melting point, high insulation performance, a dielectric constant of 4.0 at 103 Hz, and a dielectric loss of only 0.004 to 0.007. Polyethylene terephthalate (PET) is prepared by ester exchange of dimethyl terephthalate with ethylene glycol or by esterification of terephthalic acid with ethylene glycol to synthesize dihydroxyethyl terephthalate, and then undergoing a polycondensation reaction. It is a crystalline saturated polyester, a milky white or light yellow, highly crystalline polymer, with a smooth and shiny surface, and can be divided into APET, RPET and PETG. PET has excellent physical and mechanical properties in a wide temperature range, and its operating temperature can reach 120°C. It has excellent electrical insulation properties, and even at high temperature and high frequency, its electrical properties are still good, and its creep resistance, fatigue resistance, friction resistance and dimensional stability are all very good. This embodiment uses PI and PET as the flexible optical film 2 to ensure that the luminous effect of the light strip is improved. Of course, in other embodiments, other plastic materials can also be used as the flexible optical film 2.

[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-bias diffusion film (simply referred to as single-bias film) can deflect light to one direction, and can provide a better solution for indoor and outdoor wall washers, blackboard lamps, and ceiling lamps. 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 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 , the stretched diffusion film can ensure that the light in the 0-180 degree direction remains unchanged, while controlling the light direction of 90-270 degrees, thereby achieving an elliptical or rectangular light spot. When used with products on the Starry Sky Optical Platform, it can provide excellent solutions for indoor commercial lighting, office lighting, and furniture lighting. At the same time, the other layer of the stretched diffusion film is the diffusion film. While the light is deflected, it can make the light on the wall very uniform, eliminating the problem of poor uniformity or light spot in the lighting area. The main function of the focusing film is to focus light, enhance the lighting effect, and limit the angle of light exposure.

[0045] In practical 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, so that 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, so that 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, so that the problem of dark areas on both sides of the light can be solved.

[0046] In particular, since the present embodiment applies the flexible optical film 2 to the extruded silicone light strip, that is, a single-bias diffuser film, a double-bias diffuser film or a stretched diffuser film is applied to the extruded silicone light strip, a flexible and bendable effect can be achieved. Further, based on the flexible and bendable effect, the flexible optical film co-extruded light strip can be applied to scenes such as indoor lighting modeling.

[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 misty.

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

[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 attenuate, 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, so the thickness of the flexible optical film 2 can be increased, and for example, some users want the light strip to emit brighter light, so 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, if Figure 7 and Figure 8 In this embodiment, the surface of the flexible optical film 2 can be polygonal (such as hexagonal, pentagonal, triangular, etc.), smooth, etc., so that after the light source passes through the flexible optical film 2 and is emitted from the light-transmitting surface, the entire light strip can present the corresponding light shape of the surface of the flexible optical film 2. For example, the surface of the flexible optical film 2 is hexagonal, so after the light source passes through the flexible optical film 2 and is emitted from the light-transmitting surface, it can display a hexagonal light pattern accordingly.

[0053] An 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 the present 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 only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device including 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 arranged 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 by 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 where 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-bias diffusion film, a double-bias diffusion film, a stretched diffusion film and a light-condensing 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 cut off, 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 a smooth shape, a polygonal shape and a circular shape.

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

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