Omnidirectional Uniform Emission Flexible Lighting Device

Abstract

This invention provides an omnidirectional uniform light emission flexible lighting device that can improve the uniformity of light emission and reduce halos and light-dark boundaries. [Solution] The omnidirectional uniform light emission flexible lighting device comprises a sheath tube 1 having a circular cross-sectional contour on its outer wall surface and an elliptical cross-sectional contour on its inner wall surface, with a light guide prism D provided axially along the inner wall surface of the sheath tube 1. An inner sheath tube 2 is fitted in close contact with the light guide prism D, and the cross-sectional contour of the outer wall surface of the inner sheath tube 2 is elliptical. The inner wall surface of the inner sheath tube 2 is provided with a locking groove 21 arranged opposite to the long axis and a curved light guide groove 22 arranged opposite to the short axis. A lighting unit 3 is positioned and mounted in the locking groove 21, and the light-emitting surfaces on both sides of the lighting unit 3 are positioned toward the curved light guide groove 22. Light emitted from both sides of the lighting unit is primarily diffused by the curved light guide groove of the inner sheath tube and secondarily diffused by the light guide prism and the sheath tube. Conventional emitted light, which had a clear projection contour and light-dark boundary, can be converted into scattered light with uniform omnidirectional emission based on the outer tube. A soft and uniform emission effect can be obtained, effectively eliminating halos and light-dark boundaries, resulting in a superior viewing effect.

Description

Technical Field

[0001] The present invention relates to the technical field of flexible light tapes, and particularly to an all-direction uniform light-emitting flexible lighting device.

Background Art

[0002] Flexible light tapes are widely used for decorative purposes. Depending on the operating modes of the mounted different LED elements, light-emitting effects such as single-color lighting, multi-color lighting, blinking, and gradation can be realized. Therefore, excellent decorative effects can be obtained on landscape trees, wall surfaces, etc.

[0003] On the other hand, flexible light tapes are not only used for applications that require a highly visible light-emitting effect as described above, but also for general lighting and auxiliary lighting in specific areas. For example, when displaying large calligraphy and painting works in a museum, there is a problem that the light projected onto the surface of the calligraphy and painting works is not uniform when using a flexible light tape with LED elements arranged at regular intervals.

[0004] Furthermore, even when a structure such as a fluorescent resin or a lamp cover is provided on the surface of the flexible light tape, there are still halos or light-dark boundaries on the projection surface, resulting in color differences, which has a problem of adversely affecting the display effect and viewing effect of the exhibited items.

Summary of the Invention

Problems to be Solved by the Invention

[0005] An object of the present invention is to provide an all-direction uniform light-emitting flexible lighting device capable of improving the uniformity of light emission and reducing halos and light-dark boundaries.

Means for Solving the Problems

[0006] The all-direction uniform light-emitting flexible lighting device includes a jacket tube whose outer wall surface has a circular cross-sectional contour and whose inner wall surface has an elliptical cross-sectional contour, and A light guide prism is provided axially along the inner wall surface of the outer tube, An inner tube is attached in close contact with the aforementioned light guide prism, Equipped with, The cross-sectional contour of the outer wall surface of the inner pipe is elliptical. The inner wall surface of the inner tube is provided with a locking groove arranged opposite to the long axis of the contour and a curved light guide groove arranged opposite to the short axis of the contour. The lighting unit is positioned and mounted by the aforementioned locking groove. The light-emitting surfaces on both sides of the lighting unit are positioned toward the curved light guide groove.

[0007] In one embodiment, the lighting unit is either a folded SMD light tape, or two sets of SMD light tapes arranged with their backs glued together.

[0008] In one embodiment, the substrate edge of the SMD light tape is positioned and mounted in the locking groove.

[0009] In one embodiment, the light-emitting elements on the surface of the SMD light tape are arranged toward the curved light guide groove. Based on the curved light guide groove, the light emitted from the SMD light tape is guided to the outer wall surface, diffusing uniformly from the inner wall surface to which the emitted light is directed.

[0010] In one embodiment, the light guide prism guides the emitted light to the outer wall surface of the sheath tube while uniformly diffusing it.

[0011] In one embodiment, the positive terminal and the negative terminal at one end of the SMD light tape are short-circuited. The other end's positive terminal is connected to the positive terminal of an external power supply, and the negative terminal is connected to the negative terminal of an external power supply.

[0012] In one embodiment, wiring plugs are attached to the ends of the outer and inner sheath tubes, and a power supply cable is attached to the wiring plugs. The SMD light tape is connected to an external power supply via the power supply cable.

[0013] In one embodiment, sealing plugs are attached to the other ends of the outer and inner sheath tubes.

[0014] In one embodiment, the outer tube and the inner tube are formed by co-extrusion molding. [Effects of the Invention]

[0015] According to this invention, light emitted from both sides of the lighting unit is primarily diffused by the curved light guide groove of the inner tube and secondarily diffused by the light guide prism and outer tube. Conventionally, emitted light had a clear projection contour and light / dark boundary, but this can be converted into scattered light with uniform omnidirectional emission based on the outer tube. A soft and uniform emission effect can be obtained, halos and light / dark boundaries can be effectively eliminated, and an excellent viewing effect can be achieved. [Brief explanation of the drawing]

[0016] To more clearly explain the technical solution in this invention, the drawings used in the embodiments are briefly described below. Note that the drawings described below relate to only some embodiments of this invention, and those skilled in the art can derive other drawings from these without requiring any creative effort.

[0017] [Figure 1] This is a schematic perspective view of the omnidirectional uniform light emission flexible lighting device according to this embodiment. [Figure 2] This is a schematic diagram of a partial structure of a flexible lighting device with uniform emission in all directions according to this embodiment. [Figure 3] This is a schematic cross-sectional view of the omnidirectional uniform light emission flexible lighting device according to this embodiment. [Modes for carrying out the invention]

[0018] Hereinafter, the technical solution according to this embodiment will be described in detail while referring to the drawings. It should be noted that the embodiments described below are only some embodiments of the present invention and do not limit all embodiments of the present invention. Based on the embodiments of the present invention, any other embodiments that can be conceived by those skilled in the art without creative efforts are all included in the protection scope of the present invention.

[0019] Referring to FIGS. 1 to 3, the omnidirectional uniform light-emitting flexible lighting device according to this embodiment includes a jacket tube 1 with a circular cross-sectional contour on the outer wall surface and an elliptical cross-sectional contour on the inner wall surface, a light guide prism D provided axially along the inner wall surface of the jacket tube 1, an inner sleeve tube 2 closely attached to the light guide prism D, and is provided with. The cross-sectional contour of the outer wall surface of the inner sleeve tube 2 is elliptical, On the inner wall surface of the inner sleeve tube 2, a locking groove 21 arranged opposite to the long axis direction of the contour and a curved light guide groove 22 arranged opposite to the short axis direction of the contour are provided. The lighting unit 3 is positioned and mounted by the locking groove 21, The light-emitting surfaces on both sides of the lighting unit 3 are arranged facing the curved light guide groove 22.

[0020] In this embodiment, the light emitted from the light-emitting surface of the lighting unit 3 is irradiated toward the curved light guide groove 22. The emitted light is guided by the curved surface and uniformly diffuses along the inner sleeve tube 2 on the side it is directed to. At this time, since the light-emitting element provided on the surface of the lighting unit 3 directly faces the curved light guide groove 22, the light flux obtained at the central part of the curved light guide groove 22 is the largest. On the other hand, since the locking groove 21 faces the side surface of the light-emitting element, the obtained light flux is the least.

[0021] Therefore, the locking groove 21 is provided along the long axis of the elliptical contour of the inner tube 2, resulting in the shortest possible distance from the locking groove 21 to the outer wall surface of the outer tube 1, and significantly shorter than the distance from the curved light guide groove 22 to the outer wall surface of the outer tube 1. This suppresses the light intensity in the portion of the outer wall surface corresponding to the curved light guide groove 22, while improving the light intensity in the portion of the outer wall surface corresponding to the locking groove 21, thereby achieving a uniform light emission effect on the outer wall surface of the outer tube 1.

[0022] Furthermore, the light guide prism D can effectively eliminate halos and light-dark boundaries between light-emitting elements by secondarily diffusing the light emitted from the outer wall surface of the inner tube 2.

[0023] In one embodiment, the lighting unit 3 is either a folded SMD light tape 31, or two sets of SMD light tapes 31 arranged with their backs glued together.

[0024] In one embodiment, the substrate edge of the SMD light tape 31 is positioned and mounted in the locking groove 21.

[0025] Here, the lighting unit 3 is positioned and mounted by the locking groove 21, ensuring that the light-emitting surface always faces the curved light guide groove 22. Furthermore, the lighting unit 3 and the locking groove 21 are not fixedly fastened together, and a movable gap is formed between them. This prevents structural pressure from occurring between the lighting unit 3 and the inner tube 2 even when bent or compressed, and facilitates winding storage or bending arrangement.

[0026] In one embodiment, the light-emitting elements on the surface of the SMD light tape 31 are arranged toward the curved light guide groove 22. Based on the curved light guide groove 22, the light emitted from the SMD light tape 31 is guided to the outer wall surface to which the emitted light is directed, while diffusing uniformly from the inner wall surface to which the emitted light is directed.

[0027] Here, the curved light guide groove 22 and the inner tube 2 body achieve primary diffusion of the emitted light.

[0028] In one embodiment, the light guide prism D guides the emitted light to the outer wall surface of the outer tube 1 while uniformly diffusing it.

[0029] Here, the light guide prism D and the outer casing tube 1 body achieve secondary diffusion of the emitted light.

[0030] As can be understood, the light guide prism D can be installed on the inner wall surface of the outer tube 1, or on the outer wall surface of the inner tube 2.

[0031] Furthermore, the light guide prism D can be simultaneously installed on both the inner wall surface of the outer tube 1 and the outer wall surface of the inner tube 2, depending on actual needs, thereby achieving even better light diffusion and light deflection effects.

[0032] In one embodiment, the positive terminal and the negative terminal at one end of the SMD light tape 31 are short-circuited. The other end's positive terminal is connected to the positive terminal of an external power supply, and the negative terminal is connected to the negative terminal of an external power supply.

[0033] In one embodiment, wiring plugs 4 are attached to the ends of the outer tube 1 and the inner tube 2. A power supply cable 41 is attached to the wiring plug 4. The SMD light tape 31 is connected to an external power supply via the power supply cable 41.

[0034] In one embodiment, sealing plugs 5 are attached to the other ends of the outer tube 1 and the inner tube 2.

[0035] In one embodiment, the outer tube 1 and the inner tube 2 are formed by co-extrusion molding.

[0036] Here, the outer tube 1 and the inner tube 2 can be integrally molded by co-extrusion molding, and since they are firmly assembled together, there is no need to manufacture and assemble them separately.

[0037] According to this invention, light emitted from both sides of the lighting unit is primarily diffused by the curved light guide groove of the inner tube and secondarily diffused by the light guide prism and outer tube. Conventionally, emitted light had a clear projection contour and light / dark boundary, but this can be converted into scattered light with uniform omnidirectional emission based on the outer tube. A soft and uniform emission effect can be obtained, halos and light / dark boundaries can be effectively eliminated, and an excellent viewing effect can be achieved. [Explanation of Symbols]

[0038] 1 Mantle tube 2 Inner cannula 21. Retaining groove 22 Curved light guide groove 3 Lighting Unit 31 SMD Light Tapes 4 Wiring plugs 41 Power supply cable 5. Sealed plug D Light guide prism

Claims

1. The outer wall surface has a circular cross-sectional contour, and the inner wall surface has an elliptical cross-sectional contour, A light guide prism (D) is provided axially along the inner wall surface of the outer tube (1), The inner sheath tube (2) is attached in close contact with the light guide prism (D), Equipped with, The cross-sectional contour of the outer wall surface of the inner pipe (2) is elliptical. The inner wall surface of the inner tube (2) is provided with a locking groove (21) arranged opposite to the long axis of the contour and a curved light guide groove (22) arranged opposite to the short axis of the contour. The locking groove (21) positions and mounts the lighting unit (3). The light-emitting surfaces on both sides of the lighting unit (3) are positioned toward the curved light guide groove (22). A flexible lighting device characterized by uniform emission in all directions.

2. The lighting unit (3) is either a folded SMD light tape (31) or two sets of SMD light tapes (31) arranged with their backs glued together. The omnidirectional uniform light emission flexible lighting device according to feature 1.

3. The substrate edge of the SMD light tape (31) is positioned and mounted in the locking groove (21). The omnidirectional uniform emission type flexible lighting device according to feature 2.

4. The light-emitting elements on the surface of the SMD light tape (31) are arranged toward the curved light guide groove (22), Based on the curved light guide groove (22), the light emitted from the SMD light tape (31) is guided to the outer wall surface to which the emitted light is directed, while diffusing uniformly from the inner wall surface to which the emitted light is directed. The omnidirectional uniform emission type flexible lighting device according to feature 3.

5. The light guide prism (D) guides the emitted light uniformly to the outer wall surface of the outer tube (1) while diffusing it. The omnidirectional uniform emission type flexible lighting device according to feature 4.

6. The positive terminal and the negative terminal at one end of the SMD light tape (31) are short-circuited. The other end's positive terminal is connected to the positive terminal of the external power supply, and the negative terminal is connected to the negative terminal of the external power supply. The omnidirectional uniform light emission flexible lighting device according to feature 1.

7. Wiring plugs (4) are attached to the ends of the outer tube (1) and the inner tube (2). A power supply cable (41) is attached to the aforementioned wiring plug (4). The SMD light tape (31) is connected to an external power supply via the power supply cable (41). The omnidirectional uniform emission type flexible lighting device according to feature 6.

8. A sealing plug (5) is attached to the other end of the outer tube (1) and the inner tube (2). The omnidirectional uniform emission type flexible lighting device according to feature 7.

9. The outer tube (1) and the inner tube (2) are formed by co-extrusion molding. The omnidirectional uniform light emission flexible lighting device according to feature 1.

Images