Fluorescent tube with multilayer optical media structure

Abstract

Fluorescent tube with a multilayer optical media structure, characterized in that it comprises: an outer tube; an inner tube disposed in the outer tube and comprising a mounting base, a first light adjusting portion, a second light adjusting portion, and a corrugated portion, wherein the mounting base, the first light adjusting portion, and the second light adjusting portion are disposed on the inner wall of the inner tube, and the corrugated portion and the mounting base are disposed between the first light adjusting portion and the second light adjusting portion; a light board arranged on the mounting base and the corrugated portion corresponds to one side of the light board; wherein the first light adjusting portion has a plurality of successively arranged first prism stages, the second light adjusting portion has a plurality of successively arranged second prism stages, and the corrugated portion has a corrugated structure.

Description

Field of the invention

[0001] The present invention relates to a fluorescent tube and, more particularly, to a fluorescent tube having a multilayer optical media structure. State of the art

[0002] Light tubes are common lighting devices widely used in offices, industrial plants, commercial premises, schools, etc. to create a bright and comfortable environment, which is why they are widely applied. Thanks to technological advances, the performance of fluorescent tubes has also improved significantly. However, because existing fluorescent tubes use a single-layer optical media structure (single-layer lamp cover) without other optical adjustment mechanisms, there are still many shortcomings that need to be addressed. For example, conventional fluorescent tubes tend to produce strong light spots, which reduces their lighting effect. In addition, due to design factors, existing fluorescent tubes often experience a reduction in luminous efficiency due to scattering. Object of the invention

[0003] According to one embodiment of the present invention, a fluorescent tube with a multi-layer optical media structure is provided, which comprises an outer tube, an inner tube and a light board, wherein the inner tube is arranged in the outer tube and comprises a mounting base, a first light adjusting section, a second light adjusting section and a corrugated section, wherein the mounting base, the first light adjusting section and the second light adjusting section are arranged on the inner wall of the inner tube, the corrugated section and the mounting base are arranged between the first light adjusting section and the second light adjusting section, the light board is arranged on the mounting base and the corrugated section corresponds to one side of the light board, wherein the first light adjusting section has a plurality of successively arranged first prism stages,the second light adjusting section has a plurality of successively arranged second prism stages and the corrugated section has a corrugated structure.,

[0004] In one embodiment, the outer tube is cylindrical.

[0005] In one embodiment, the corrugated portion is arranged on the inner wall or the outer wall of the inner tube.

[0006] In one embodiment, the corrugated portion is arranged on the inner wall and the outer wall of the inner tube.

[0007] In one embodiment, the corrugated structure comprises a plurality of protruding portions, wherein the upper end of each protruding portion is arcuate.

[0008] In one embodiment, the corrugated structure further comprises a plurality of planar portions, wherein the plurality of projecting portions and the plurality of planar portions are arranged alternately.

[0009] In one embodiment, each first prism stage has a first upper level and a first lower level connected thereto, wherein the distance between the first upper level and the light board is smaller than the distance between the first lower level and the light board, wherein each second prism stage has a second upper level and a second lower level connected thereto, and the distance between the second upper level and the light board is smaller than the distance between the second lower level and the light board.

[0010] In one embodiment, the first upper plane is parallel to the vertical reference plane, the first lower plane is parallel to the horizontal reference plane, the second upper plane is parallel to the vertical reference plane, and the second lower plane is parallel to the horizontal reference plane.

[0011] In one embodiment, the first upper plane is not parallel to the vertical reference plane, the first lower plane is not parallel to the horizontal reference plane, the second upper plane is not parallel to the vertical reference plane, and the second lower plane is not parallel to the horizontal reference plane.

[0012] In one embodiment, the first light adjusting portion and the second light adjusting portion are inclined surfaces, with the corrugated portion being arcuate.

[0013] Based on the above description, the fluorescent tube with multilayer optical media structure according to the embodiments of the present invention may have one or more of the following advantages: (1) In one embodiment of the present invention, the fluorescent tube comprises an outer tube, an inner tube, and a light board, wherein the inner tube is arranged in the outer tube and includes a mounting base, a first light adjusting portion, a second light adjusting portion, and a corrugated portion, wherein the mounting base, the first light adjusting portion, and the second light adjusting portion are arranged on the inner wall of the inner tube, the corrugated portion and the mounting base are arranged between the first light adjusting portion and the second light adjusting portion, the light board is arranged on the mounting base, and the corrugated portion corresponds to one side of the light board, wherein the first light adjusting portion has a plurality of sequentially arranged first prism stages, the second light adjusting portion has a plurality of sequentially arranged second prism stages, and the corrugated portion has a corrugated structure.As described above, the fluorescent tube includes an outer tube and an inner tube inserted therein to form a multi-layer optical media structure (double-layer lamp cover). The multi-layer optical media structure allows the light emitted from the light board to be refracted twice to achieve the function of light concentration, so that the illuminance in a specific direction (the direction of the corrugated portion) can be increased, thus greatly improving the lighting effect of the fluorescent tube. Furthermore, the corrugated structure can evenly diffuse the light, resulting in a more uniform light distribution. (2) In one embodiment of the present invention, the first light adjusting portion and the second light adjusting portion of the inner tube of the fluorescent tube have a special structural configuration, wherein the first light adjusting portion has a plurality of sequentially arranged first prism stages, the second light adjusting portion has a plurality of sequentially arranged second prism stages, each first prism stage has a first upper plane and a first lower plane connected thereto, the distance between the first upper plane and the light board is smaller than the distance between the first lower plane and the light board, each second prism stage has a second upper plane and a second lower plane connected thereto, and the distance between the second upper plane and the light board is smaller than the distance between the second lower plane and the light board.Through the structural design of the first light adjusting section and the second light adjusting section, the light emitted from the light board can be effectively concentrated toward the corrugated section to improve the luminous efficiency of the fluorescent tube, thus greatly improving the efficiency of the fluorescent tube;. (3) In one embodiment of the present invention, the first light adjusting portion and the second light adjusting portion of the inner tube of the fluorescent tube have a special structural configuration such that the first light adjusting portion and the second light adjusting portion are serrated, which can effectively stretch the light spots generated by the light to prevent the user from experiencing glare or other discomfort caused by the light spots. Therefore, the visual effect of the light of the fluorescent tube can be significantly improved, making the application of the fluorescent tube more extensive and the use more flexible. (4) In one embodiment of the present invention, the corrugated portion of the inner tube of the arc tube has a corrugated structure, the corrugated structure including a plurality of protruding portions and a plurality of flat portions, the plurality of protruding portions and the plurality of flat portions are alternately arranged, and the top end of each protruding portion is arcuate. As described above, the corrugated structure of the corrugated portion including the plurality of protruding portions and the plurality of flat portions can significantly reduce the scattering phenomenon, resulting in less light loss with respect to the light passing through the corrugated portion. Therefore, the luminous efficiency of the arc tube can be further improved to meet the requirements of practical applications. (5) In one embodiment of the present invention, the first light adjusting portion and the second light adjusting portion of the inner tube of the arc tube are inclined surfaces, and the corrugated portion is arcuate. Moreover, the first upper plane of each first prism stage is parallel to the vertical reference plane, the first lower plane of each first prism stage is parallel to the horizontal reference plane, the second upper plane of each second prism stage is parallel to the vertical reference plane, and the second lower plane of each second prism stage is parallel to the horizontal reference plane. In this way, the first light adjusting portion and the second light adjusting portion can be configured in a staircase shape.This structural design can improve the function of light concentration, so that the illuminance in a certain direction (the direction of the corrugated section) can be increased, and thus the lighting effect of the fluorescent tube can be greatly improved;. (6) In one embodiment of the present invention, the fluorescent tube can implement a multi-layer optical media structure through a simple structural design, which can effectively improve the luminous efficiency, illumination effect, and visual effect of the fluorescent tube. Thus, the fluorescent tube can achieve the desired effect without significantly increasing the cost, thereby improving the practicability of the fluorescent tube, better meeting the requirements of various applications, and accommodating the trend of future developments. Brief description of the drawings Fig. 1 shows a schematic perspective view of a first embodiment of the fluorescent tube according to the invention with a multilayer optical media structure; Fig. 2 shows a sectional view of the first embodiment of the fluorescent tube according to the invention with a multilayer optical media structure; Fig. 3 shows a schematic view of a first prism stage of the first light adjusting section of the first embodiment of the fluorescent tube with a multilayer optical media structure according to the invention; Fig. 4 shows a schematic view of the corrugated structure of the corrugated portion of the first embodiment of the fluorescent tube with a multilayer optical media structure according to the invention; Fig. 5 shows a schematic view of a second embodiment of the fluorescent tube according to the invention with a multilayer optical media structure in the operating state; Fig. 6 shows a sectional view of a third embodiment of the fluorescent tube according to the invention with a multilayer optical media structure; Fig. 7 shows a schematic view of the third embodiment of the fluorescent tube according to the invention with a multilayer optical media structure in the operating state; Fig. 8 shows a sectional view of a fourth embodiment of the fluorescent tube with a multilayer optical media structure according to the invention; Fig. 9 shows a schematic view of the first prism stages of the first light adjusting section of the fourth embodiment of the fluorescent tube with a multilayer optical media structure according to the invention. List of reference symbols

[0014] 1-luminous tube; 11-lamp socket; 12-outer tube; 13-inner tube; 131-mounting base; 132A-first light adjusting section; 132B-second light adjusting section; 133-corrugated section; P1-protruding section; P2-flat section; 14-light board; 141-circuit board; 142-LED; LS-light-emitting surface of the light board; S1, S1'-first prism stage; S2, S2'-second prism stage; a1-bottom surface; b1, b1'-first lower plane; c1, c1'-first upper plane; θ1, θ2-angle; DA-diffusion agent; X1-center axis of the light board; VR-vertical reference plane; HR-horizontal reference plane; AR1, AR2 arrow.

[0015] The detailed features and advantages of the present invention will be described in detail below in the embodiments, the contents of which are sufficient for those skilled in the art to understand the technical content of the present invention and to implement the present invention accordingly. Based on the contents, claims, and drawings disclosed in this specification, one skilled in the art can easily understand the objects and advantages of the present invention. Detailed description of the implementation examples

[0016] In the following, embodiments of the fluorescent tube with a multilayer optical media structure according to the invention are described in detail with reference to the accompanying drawings. For clarity and simplicity, the dimensions and proportions of the components may be exaggerated or reduced in size in the drawings. Whenever in the following description and / or the claims it is mentioned that a component is "connected" or "coupled" to another component, this means that the component may be connected or coupled to another component directly or through an intervening component. When a component is directly "connected" or "coupled" to another component, no intervening components are present. Other words used to describe the relationships between components or layers should be interpreted in the same way.For better understanding, the same components in the following embodiments are provided with the same reference numerals.

[0017] It will be on the Fig. 1, Fig. 2, Fig. 3 and Fig. 4 is referred to. Fig. 1 shows a schematic perspective view of a first embodiment of the fluorescent tube according to the invention with a multilayer optical media structure; Fig. 2 shows a sectional view of the first embodiment of the fluorescent tube according to the invention with a multilayer optical media structure; Fig. 3 shows a schematic view of a first prism stage of the first light adjusting section of the first embodiment of the fluorescent tube with a multilayer optical media structure according to the invention; and Fig. Figure 4 shows a schematic view of the corrugated structure of the corrugated portion of the first embodiment of the fluorescent tube with a multilayer optical media structure according to the invention. The fluorescent tube 1 comprises two lamp sockets 11, an outer tube 12, an inner tube 13, and a light board 14.

[0018] The outer tube 12 is cylindrical. In the present embodiment, the outer tube 12 may be made of glass. In another embodiment, the outer tube 12 may be made of plastic or another transparent or semi-transparent material.

[0019] The inner tube 13 is arranged in the outer tube 12 and includes a mounting base 131, a first light adjusting portion 132A, a second light adjusting portion 132B, and a corrugated portion 133. The mounting base 131, the first light adjusting portion 132A, and the second light adjusting portion 132B are arranged on the inner wall of the inner tube 13, the corrugated portion 133 is arranged between the first light adjusting portion 132A and the second light adjusting portion 132B, and the mounting base 131 is also arranged between the first light adjusting portion 132A and the second light adjusting portion 132B and is opposite to the corrugated portion 133. In this way, the corrugated portion 133 corresponds to one side of the light board 14 (the corrugated portion 133 is opposite the light-emitting surface LS of the light board 14). In the present embodiment, the inner tube 13 may be made of glass and contain a diffusion agent.In another embodiment, the inner tube 13 may be made of plastic or another transparent or semi-transparent material.

[0020] The light board 14 is arranged on the mounting base 131 of the inner tube 13 and comprises a circuit board 141 and several LEDs 142 (only one is shown in the figures).

[0021] The two lamp sockets 11 are arranged at the two ends of the outer tube 12, wherein one of the lamp sockets 11 may be provided with a power supply module (not shown) that may be connected to the light board 14 to drive the light board 14. The circuit structure of the power supply module is known to a person skilled in the art and will therefore not be described in detail here.

[0022] The inner tube 13 has a special optical structural configuration. The first light adjusting section 132A and the second light adjusting section 132B are arc-shaped. The first light adjusting section 132A has a plurality of sequentially arranged first prism stages S1. The second light adjusting section 132B has a plurality of sequentially arranged second prism stages S2. Each first prism stage S1 has a first upper plane c1, a first lower plane b1, and a bottom plane a1 that are connected to each other (in the present embodiment, the side of the first prism stage S1 farthest from the light board 14 is defined as the bottom plane a1, and the remaining two sides of the first prism stage S1 are respectively defined as the first upper plane c1 and the first lower plane b1), wherein the distance between the first upper plane c1 and the light board 14 is smaller than the distance between the first lower plane b1 and the light board 14.Likewise, each second prism stage S2 has a second upper plane and a second lower plane connected thereto, wherein the distance between the second upper plane and the light board 14 is smaller than the distance between the second lower plane and the light board 14, the first upper plane c1 is not parallel to the vertical reference plane VR, the first lower plane b1 is not parallel to the horizontal reference plane H, the second upper plane is not parallel to the vertical reference plane VR, the second lower plane is not parallel to the horizontal reference plane HR (the vertical reference plane VR is perpendicular to the light exit surface LS of the light board 14 and the horizontal reference plane HR is parallel to the light exit surface LS of the light board 14) and the angle of the first prism stage S1 to the central axis X1 of the light board 14 is greater than 90° (θ1>90°).The structure of the first prism stage S1 is the same as that of the second prism stage S2, therefore only the structure of the first prism stage S1 is described in the present embodiment.

[0023] The corrugated portion 133 has a corrugated structure and is arcuate. In the present embodiment, the corrugated portion 133 is arranged on the inner wall of the inner tube 13. In another embodiment, the corrugated portion 133 may be arranged on the outer wall of the inner tube 13. In yet another embodiment, the corrugated portion 133 may be arranged on both the outer wall and the inner wall. The corrugated structure includes a plurality of projecting portions P1 and a plurality of flat portions P2, wherein the plurality of projecting portions P1 and the plurality of flat portions P2 are arranged alternately, and the upper end of each projecting portion P1 is arcuate. In the present embodiment, the width of a projecting portion P1 may be equal to the width of a flat portion P2.In another embodiment, the width of a protruding portion P1 may be greater than the width of a flat portion P2. In yet another embodiment, the width of a protruding portion P1 may be smaller than the width of a flat portion P2, or the corrugated structure may comprise only a plurality of protruding portions P1 without flat portions P2.

[0024] Only a small portion of the light emitted from the light board 14 passes through the upper half of the first light adjusting section 132A and the second light adjusting section 132B. The plurality of first prism stages S1 of the first light adjusting section 132A and the plurality of second prism stages S2 of the second light adjusting section 132B effectively stretch the light spots created by the light to prevent the user from being exposed to glare or other discomfort caused by the light spots. A portion of the light emitted from the light board 14 passes through the lower half of the first light adjusting section 132A and the second light adjusting section 132B. The plurality of first prism stages S1 of the first light adjusting section 132A and the plurality of second prism stages S2 of the second light adjusting section 132B also effectively stretch the light spots created by the light.At the same time, the plurality of first prism stages S1 of the first light adjusting section 132A and the plurality of second prism stages S2 of the second light adjusting section 132B can concentrate the light emitted from the light board 14 toward the corrugated portion 133 through refraction. Most of the light emitted from the light board 14 passes through the corrugated portion 133. The corrugated structure of the corrugated portion 133, which includes the plurality of protruding portions P1 and the plurality of flat portions P2, can significantly reduce the scattering phenomenon, resulting in less light loss with respect to the light passing through the corrugated portion 133. Furthermore, the corrugated structure can evenly scatter the light, resulting in a more uniform light distribution.After the light emitted from the light board 14 passes through the inner tube 13, it passes through the outer tube 12, and the outer tube 12 refracts the light emitted from the light board 14 and concentrates it toward the corrugated portion 133.

[0025] As described above, in the present embodiment, the first light adjusting portion 132A and the second light adjusting portion 132B of the inner tube 13 of the fluorescent tube 1 have a specific structural configuration. The first light adjusting portion 132A includes a plurality of sequentially arranged first prism stages S1, and the second light adjusting portion 132B includes a plurality of sequentially arranged second prism stages S2. Each first prism stage S1 includes a first upper plane c1, a first lower plane b1, and a bottom plane a1 connected to each other, and the distance between the first upper plane c1 and the light board 14 is smaller than the distance between the first lower plane b1 and the light board 14.Each second prism stage S2 has a second upper plane and a second lower plane connected thereto, wherein the distance between the second upper plane and the light board 14 is smaller than the distance between the second lower plane and the light board 14. By structurally designing the first light adjusting portion 132A and the second light adjusting portion 132B, the light emitted from the light board 14 can be effectively concentrated toward the corrugated portion 133 to improve the luminous efficacy of the fluorescent tube 1. Therefore, the efficiency of the fluorescent tube 1 is significantly improved.

[0026] Furthermore, in the present embodiment, the first light adjusting portion 132A and the second light adjusting portion 132B of the inner tube 13 of the fluorescent tube 1 have a special structural configuration such that the first light adjusting portion 132A and the second light adjusting portion 132B are serrated, which can effectively elongate the light spots generated by the light to prevent the user from experiencing glare or other discomfort caused by the light spots. Therefore, the visual effect of the light of the fluorescent tube 1 can be significantly improved, making the application of the fluorescent tube 1 more extensive and the use more flexible.

[0027] Furthermore, in the present embodiment, the corrugated portion 133 of the inner tube 13 of the fluorescent tube 1 has a corrugated structure, the corrugated structure including a plurality of protruding portions P1 and a plurality of flat portions P2, the plurality of protruding portions P1 and the plurality of flat portions P2 are alternately arranged, and the top end of each protruding portion P1 is arcuate. As described above, the corrugated structure of the corrugated portion 133 including the plurality of protruding portions P1 and the plurality of flat portions P2 can significantly reduce the scattering phenomenon, resulting in less light loss with respect to the light passing through the corrugated portion 133. Therefore, the luminous efficiency of the fluorescent tube 1 can be further improved to meet the requirements of practical applications.

[0028] Therefore, in the fluorescent tube 1, a multi-layer optical media structure (combination of the outer tube 12 and the inner tube 13) can be achieved through a simple structural design. Furthermore, the first light adjusting portion 132A of the inner tube 13 has a plurality of sequentially arranged first prism stages S1, the second light adjusting portion 132B of the inner tube 13 has a plurality of sequentially arranged second prism stages S2, and the corrugated portion 133 of the inner tube 13 has a corrugated structure, so that the structural design of the inner tube 13 represents a multifunctional, compact, and small-sized structure. Therefore, the multi-layer optical media structure can effectively improve the luminous efficiency, illumination effect, and visual effect of the fluorescent tube 1.

[0029] Of course, the present embodiment is for illustrative purposes only and does not limit the scope of the present invention. All equivalent modifications and changes that may be made to the fluorescent tube with a multilayer optical media structure according to the present embodiment are within the scope of the present invention.

[0030] It will be Fig. 5, which shows a schematic view of a second embodiment of the fluorescent tube with a multilayer optical media structure according to the invention in operation. As shown in the figure, in the present embodiment, the corrugated structure of the corrugated portion 133 of the inner tube 13 includes only the protruding portions P1. When light passes through the corrugated portion 133 of the inner tube 12, it is refracted by both the corrugated portion 133 and the diffusion agent DA contained therein. At the same time, the corrugated portion 133 can significantly reduce the scattering phenomenon, resulting in less light loss with respect to the light passing through the corrugated portion 133. Then, when the light passes through the outer tube 12, the outer tube 12 can concentrate the light emitted from the light board 14 toward the corrugated portion 133 by rerefracting it.The light path is shown in the figure by the arrow AR1.

[0031] Of course, the present embodiment is for illustrative purposes only and does not limit the scope of the present invention. All equivalent modifications and changes that may be made to the fluorescent tube with a multilayer optical media structure according to the present embodiment are within the scope of the present invention.

[0032] It is worth noting that existing fluorescent tubes have a single-layer optical media structure (single-layer lamp cover) without other optical adjustment mechanisms, so there are still many shortcomings that need to be addressed. For example, conventional fluorescent tubes tend to produce strong light spots, which reduces their lighting effect. Furthermore, due to design factors, existing fluorescent tubes often experience a reduction in luminous efficiency due to scattering. In contrast, the fluorescent tube according to an embodiment of the present invention includes an outer tube, an inner tube, and a light board. The inner tube is arranged in the outer tube and includes a mounting base, a first light adjusting portion, a second light adjusting portion, and a corrugated portion. The mounting base,The first light adjusting section and the second light adjusting section are arranged on the inner wall of the inner tube, the corrugated section and the mounting base are arranged between the first light adjusting section and the second light adjusting section, the light board is arranged on the mounting base, and the corrugated section corresponds to one side of the light board, wherein the first light adjusting section has a plurality of sequentially arranged first prism stages, the second light adjusting section has a plurality of sequentially arranged second prism stages, and the corrugated section has a corrugated structure. As described above, the fluorescent tube comprises an outer tube and an inner tube inserted therein to form a multi-layer optical media structure (double-layer lamp cover). Due to the multi-layer optical media structure, the light emitted by the light board can be refracted twice.to create the function of light concentration, so that the illuminance in a specific direction (the direction of the corrugated portion) can be increased and thus the lighting effect of the fluorescent tube can be significantly improved. In contrast, the first light adjusting portion and the second light adjusting portion of the inner tube of the fluorescent tube according to an embodiment of the present invention have a special structural design, wherein the first light adjusting portion has a plurality of sequentially arranged first prism stages, the second light adjusting portion has a plurality of sequentially arranged second prism stages, each first prism stage has a first upper plane and a first lower plane connected thereto, the distance between the first upper plane and the light board is smaller than the distance between the first lower plane and the light board,Each second prism stage has a second upper plane and a second lower plane connected to it, and the distance between the second upper plane and the light board is smaller than the distance between the second lower plane and the light board. The structural design of the first light-adjusting section and the second light-adjusting section allows the light emitted by the light board to be effectively concentrated toward the corrugated section to improve the luminous efficacy of the fluorescent tube and thus significantly improve the efficiency of the fluorescent tube. Furthermore, the light can be evenly scattered by the corrugated structure, resulting in a more uniform light distribution.

[0033] Furthermore, according to an embodiment of the present invention, the first light adjusting portion and the second light adjusting portion of the inner tube of the fluorescent tube have a special structural configuration such that the first light adjusting portion and the second light adjusting portion are serrated, which can effectively elongate the light spots generated by the light to prevent the user from experiencing glare or other discomfort caused by the light spots. Therefore, the visual effect of the light of the fluorescent tube can be significantly improved, making the application of the fluorescent tube more extensive and the use more flexible.

[0034] Furthermore, according to an embodiment of the present invention, the corrugated portion of the inner tube of the fluorescent tube has a corrugated structure, the corrugated structure including a plurality of protruding portions and a plurality of flat portions, the plurality of protruding portions and the plurality of flat portions are alternately arranged, and the top end of each protruding portion is arcuate. As described above, the corrugated structure of the corrugated portion including the plurality of protruding portions and the plurality of flat portions can significantly reduce the scattering phenomenon, resulting in less light loss with respect to the light passing through the corrugated portion. Therefore, the luminous efficiency of the fluorescent tube can be further improved to meet the requirements of practical applications.

[0035] Furthermore, according to an embodiment of the present invention, the first light adjusting portion and the second light adjusting portion of the inner tube of the arc tube are inclined surfaces, and the corrugated portion is arcuate. Moreover, the first upper plane of each first prism stage is parallel to the vertical reference plane, the first lower plane of each first prism stage is parallel to the horizontal reference plane, the second upper plane of each second prism stage is parallel to the vertical reference plane, and the second lower plane of each second prism stage is parallel to the horizontal reference plane. In this way, the first light adjusting portion and the second light adjusting portion can be configured in a staircase shape.This structural design can improve the light concentration function, so that the illuminance in a certain direction (the direction of the corrugated section) can be increased, and thus the lighting effect of the fluorescent tube can be greatly improved.

[0036] Furthermore, according to an embodiment of the present invention, the fluorescent tube can achieve a multi-layer optical media structure through a simple structural design, which can effectively improve the luminous efficiency, illumination effect, and visual effect of the fluorescent tube. Thus, the fluorescent tube can achieve the desired effect without significantly increasing the cost, thereby improving the practicability of the fluorescent tube, better meeting the requirements of various applications, and responding to the trend of future developments. From the above description, it is clear that the fluorescent tube with the multi-layer optical media structure according to an embodiment of the present invention can indeed achieve excellent technical effects.

[0037] It will be Fig. 6, which shows a sectional view of a third embodiment of the fluorescent tube according to the invention with a multilayer optical media structure. Reference is also made to Fig. 1. As shown in the figures, the fluorescent tube 1 comprises two lamp sockets 11, an outer tube 12, an inner tube 13, and a light board 14.

[0038] The outer tube 12 is cylindrical. The inner tube 13 is arranged in the outer tube 12 and includes a mounting base 131, a first light adjusting portion 132A, a second light adjusting portion 132B, and a corrugated portion 133. The mounting base 131, the first light adjusting portion 132A, and the second light adjusting portion 132B are arranged on the inner wall of the inner tube 13, the corrugated portion 133 is arranged between the first light adjusting portion 132A and the second light adjusting portion 132B, and the mounting base 131 is also arranged between the first light adjusting portion 132A and the second light adjusting portion 132B and is opposite the corrugated portion 133. In this way, the corrugated portion 133 corresponds to one side of the light board 14 (the corrugated portion 133 is opposite to the light exit surface LS of the light board 14).

[0039] The light board 14 is arranged on the mounting base 131 of the inner tube 13 and comprises a circuit board 141 and several LEDs 142.

[0040] The two lamp sockets 11 are arranged at the two ends of the outer tube 12, wherein one of the lamp sockets 11 may be provided with a power supply module (not shown) which may be connected to the light board 14 to drive the light board 14.

[0041] The above components are similar to those of the previous embodiments, so they will not be discussed further. Unlike the previous embodiments, in the present embodiment, the inner tube 13 has a different structural optical configuration, with the first light adjusting portion 132A and the second light adjusting portion 132B being inclined surfaces, and both the first light adjusting portion 132A and the second light adjusting portion 132B having a corrugated structure.

[0042] The corrugated portion 133 has a corrugated structure and is arcuate. In the present embodiment, the corrugated portion 133 is arranged on the outer wall of the inner tube 13. In the present embodiment, the corrugated structure includes only a plurality of protruding portions P1 without flat portions P2 (the corrugated structure of the present embodiment is in Fig. 7, but not in Fig. 6). In another embodiment, the corrugated portion 133 may also be arranged on the inner wall of the inner tube 13.

[0043] As described above, the first light adjusting portion 132A and the second light adjusting portion 132B are inclined surfaces that can effectively concentrate the light emitted from the light board toward the corrugated portion 133, thereby improving the luminous efficiency of the fluorescent tube 1. At the same time, the first light adjusting portion 132A and the second light adjusting portion 132B can effectively stretch the light spots generated by the light from the light board 14 and greatly reduce the scattering phenomenon. Likewise, with the corrugated structure of the corrugated portion 133, the scattering phenomenon can be significantly reduced, resulting in less light loss with respect to the light passing through the corrugated portion 133. Therefore, the luminous efficiency of the fluorescent tube 1 can be further improved to meet the requirements of practical applications.

[0044] Of course, the present embodiment is for illustrative purposes only and does not limit the scope of the present invention. All equivalent modifications and changes that may be made to the fluorescent tube with a multilayer optical media structure according to the present embodiment are within the scope of the present invention.

[0045] It will be Fig. 7, which shows a schematic view of the third embodiment of the fluorescent tube with a multilayer optical media structure according to the invention in operation. As shown in the figure, in the present embodiment, the corrugated structure of the corrugated portion 133 of the inner tube 13 includes only the protruding portions P1. When light passes through the corrugated portion 133 of the inner tube 12, it is refracted by both the corrugated portion 133 and the diffusion agent DA contained therein. At the same time, the corrugated portion 133 can significantly reduce the scattering phenomenon, resulting in less light loss with respect to the light passing through the corrugated portion 133. Then, when the light passes through the outer tube 12, the outer tube 12 can concentrate the light emitted from the light board 14 toward the corrugated portion 133 by rerefracting it.The light path is shown in the figure by the arrow AR2.

[0046] Of course, the present embodiment is for illustrative purposes only and does not limit the scope of the present invention. All equivalent modifications and changes that may be made to the fluorescent tube with a multilayer optical media structure according to the present embodiment are within the scope of the present invention.

[0047] It will be on the Fig. 8 and Fig. 9 is referred to. Fig. 8 shows a sectional view of a fourth embodiment of the fluorescent tube according to the invention with a multilayer optical media structure; and Fig. Fig. 9 shows a schematic view of the first prism stages of the first light adjusting section of the fourth embodiment of the fluorescent tube with a multilayer optical media structure according to the invention. At the same time, Fig. 1. As shown in the figures, the fluorescent tube 1 comprises two lamp sockets 11, an outer tube 12, an inner tube 13, and a light board 14.

[0048] The outer tube 12 is cylindrical. The inner tube 13 is arranged in the outer tube 12 and includes a mounting base 131, a first light adjusting portion 132A, a second light adjusting portion 132B, and a corrugated portion 133. The mounting base 131, the first light adjusting portion 132A, and the second light adjusting portion 132B are arranged on the inner wall of the inner tube 13, the corrugated portion 133 is arranged between the first light adjusting portion 132A and the second light adjusting portion 132B, and the mounting base 131 is also arranged between the first light adjusting portion 132A and the second light adjusting portion 132B and is opposite the corrugated portion 133. In this way, the corrugated portion 133 corresponds to one side of the light board 14 (the corrugated portion 133 is opposite to the light exit surface LS of the light board 14).

[0049] The light board 14 is arranged on the mounting base 131 of the inner tube 13 and comprises a circuit board 141 and several LEDs 142.

[0050] The two lamp sockets 11 are arranged at the two ends of the outer tube 12, wherein one of the lamp sockets 11 may be provided with a power supply module (not shown) which may be connected to the light board 14 to drive the light board 14.

[0051] The above components are similar to those of the previous embodiments, so they will not be discussed further. Unlike the previous embodiments, in the present embodiment, the inner tube 13 has a different structural optical design, wherein the first light adjusting section 132A and the second light adjusting section 132B are inclined surfaces, the first light adjusting section 132A has a plurality of successively arranged first prism stages S1', and the second light adjusting section 132B has a plurality of successively arranged second prism stages S2', wherein each first prism stage S1' has a first upper plane c1' and a first lower plane b1' connected thereto, and the distance between the first upper plane c1' and the light board 14 is smaller than the distance between the first lower plane b1' and the light board 14.wherein each second prism stage S2' has a second upper plane and a second lower plane connected thereto, and the distance between the second upper plane and the light board 14 is smaller than the distance between the second lower plane and the light board 14, wherein the angle of the first prism stage S1' to the central axis X1 of the light board 14 is 90° (θ2=90°). The structure of the first prism stage S1' is the same as that of the second prism stage S2'; therefore, only the structure of the first prism stage S1' is described in the present embodiment.

[0052] The corrugated portion 133 has a corrugated structure and is arcuate. In the present embodiment, the corrugated portion 133 is arranged on the outer wall of the inner tube 13. In the present embodiment, the corrugated structure includes only a plurality of protruding portions P1 without flat portions P2 (the corrugated structure of the present embodiment is not shown in Fig. 8 and is the same as that of Fig. 5). In another embodiment, the corrugated portion 133 may also be arranged on the outer wall of the inner tube 13.

[0053] Furthermore, according to an embodiment of the present invention, the first light adjusting portion 132A and the second light adjusting portion 132B of the inner tube 13 of the arc tube 1 are inclined surfaces, and the corrugated portion 133 is arcuate. Moreover, the first upper plane c1' of each first prism stage S1' is parallel to the vertical reference plane VR, the first lower plane b' of each first prism stage S' is parallel to the horizontal reference plane HR, the second upper plane of each second prism stage S2' is parallel to the vertical reference plane VR, and the second lower plane of each second prism stage S2' is parallel to the horizontal reference plane HR. In this way, the first light adjusting portion 132A and the second light adjusting portion 132B can be configured in a staircase shape.By this structural design, the light concentration function can be improved, so that the illuminance in a certain direction (the direction of the corrugated portion 133) can be increased and thus the lighting effect of the fluorescent tube 1 can be significantly improved.

[0054] Of course, the present embodiment is for illustrative purposes only and does not limit the scope of the present invention. All equivalent modifications and changes that may be made to the fluorescent tube with a multilayer optical media structure according to the present embodiment are within the scope of the present invention.

[0055] Although the steps of the inventive methods are shown and described in a particular order, the order of the steps may be changed for each method. Some steps may also be performed in reverse order or concurrently with other steps. In another embodiment, the steps of the methods may be performed intermittently and / or alternately.

[0056] In summary, the fluorescent tube according to an embodiment of the present invention comprises an outer tube, an inner tube, and a light board, wherein the inner tube is arranged in the outer tube and comprises a mounting base, a first light adjusting portion, a second light adjusting portion, and a corrugated portion, wherein the mounting base, the first light adjusting portion, and the second light adjusting portion are arranged on the inner wall of the inner tube, the corrugated portion and the mounting base are arranged between the first light adjusting portion and the second light adjusting portion, the light board is arranged on the mounting base, and the corrugated portion corresponds to one side of the light board, wherein the first light adjusting portion has a plurality of successively arranged first prism stages,The second light-adjusting section has a plurality of consecutively arranged second prism stages, and the corrugated section has a corrugated structure. As described above, the fluorescent tube comprises an outer tube and an inner tube inserted therein to form a multi-layer optical media structure (double-layer lamp cover). The multi-layer optical media structure allows the light emitted from the light board to be refracted twice to achieve the function of light concentration, thus increasing the illuminance in a specific direction (the direction of the corrugated section), thus significantly improving the lighting effect of the fluorescent tube. Furthermore, the corrugated structure allows the light to be evenly diffused, resulting in a more uniform light distribution.

[0057] According to an embodiment of the present invention, the first light adjusting section and the second light adjusting section of the inner tube of the fluorescent tube have a special structural design, wherein the first light adjusting section has a plurality of sequentially arranged first prism stages, the second light adjusting section has a plurality of sequentially arranged second prism stages, each first prism stage has a first upper plane and a first lower plane connected thereto, the distance between the first upper plane and the light board is smaller than the distance between the first lower plane and the light board, each second prism stage has a second upper plane and a second lower plane connected thereto, and the distance between the second upper plane and the light board is smaller than the distance between the second lower plane and the light board.Through the structural design of the first light adjusting section and the second light adjusting section, the light emitted from the light board can be effectively concentrated toward the corrugated section to improve the luminous efficiency of the fluorescent tube, thus greatly improving the efficiency of the fluorescent tube.

[0058] Furthermore, according to an embodiment of the present invention, the first light adjusting portion and the second light adjusting portion of the inner tube of the fluorescent tube have a special structural configuration such that the first light adjusting portion and the second light adjusting portion are serrated, which can effectively elongate the light spots generated by the light to prevent the user from experiencing glare or other discomfort caused by the light spots. Therefore, the visual effect of the light of the fluorescent tube can be significantly improved, making the application of the fluorescent tube more extensive and the use more flexible.

[0059] Furthermore, according to an embodiment of the present invention, the corrugated portion of the inner tube of the fluorescent tube has a corrugated structure, the corrugated structure including a plurality of protruding portions and a plurality of flat portions, the plurality of protruding portions and the plurality of flat portions are alternately arranged, and the top end of each protruding portion is arcuate. As described above, the corrugated structure of the corrugated portion including the plurality of protruding portions and the plurality of flat portions can significantly reduce the scattering phenomenon, resulting in less light loss with respect to the light passing through the corrugated portion. Therefore, the luminous efficiency of the fluorescent tube can be further improved to meet the requirements of practical applications.

[0060] Furthermore, according to an embodiment of the present invention, the first light adjusting portion and the second light adjusting portion of the inner tube of the arc tube are inclined surfaces, and the corrugated portion is arcuate. Moreover, the first upper plane of each first prism stage is parallel to the vertical reference plane, the first lower plane of each first prism stage is parallel to the horizontal reference plane, the second upper plane of each second prism stage is parallel to the vertical reference plane, and the second lower plane of each second prism stage is parallel to the horizontal reference plane. In this way, the first light adjusting portion and the second light adjusting portion can be configured in a staircase shape.This structural design can improve the light concentration function, so that the illuminance in a certain direction (the direction of the corrugated section) can be increased, and thus the lighting effect of the fluorescent tube can be greatly improved.

[0061] Furthermore, according to an embodiment of the present invention, a multi-layer optical media structure can be achieved in the fluorescent tube through a simple structural design, which can effectively improve the luminous efficiency, illumination effect, and visual effect of the fluorescent tube. Thus, the fluorescent tube can achieve the desired effect without significantly increasing the cost, thereby improving the practicality of the fluorescent tube, better meeting the requirements of various applications, and addressing the trend of future developments.

[0062] It should be noted that the above description only illustrates exemplary embodiments of the invention and is not intended to limit the scope of the present invention. All equivalent changes and modifications that can be made by one skilled in the art in accordance with the description and drawings of the invention are within the scope of the present invention.

[0063] A fluorescent tube with a multilayer optical media structure thus comprises an outer tube, an inner tube, and a light board, wherein the inner tube is arranged in the outer tube and comprises a mounting base, a first light adjusting section, a second light adjusting section, and a corrugated section. The mounting base, the first light adjusting section, and the second light adjusting section are arranged on the inner wall of the inner tube. The corrugated section and the mounting base are arranged between the first light adjusting section and the second light adjusting section. The light board is arranged on the mounting base, and the corrugated section corresponds to one side of the light board. The first light adjusting section has a plurality of successively arranged first prism stages.the second light adjusting section has a plurality of successively arranged second prism stages and the corrugated section has a corrugated structure.,

Claims

[1] Fluorescent tube with multilayer optical media structure, characterized by that it includes: an outer tube; an inner tube disposed in the outer tube and comprising a mounting base, a first light adjusting portion, a second light adjusting portion, and a corrugated portion, wherein the mounting base, the first light adjusting portion, and the second light adjusting portion are disposed on the inner wall of the inner tube, and the corrugated portion and the mounting base are disposed between the first light adjusting portion and the second light adjusting portion; a light board arranged on the mounting base and the corrugated portion corresponds to one side of the light board; wherein the first light adjusting portion has a plurality of successively arranged first prism stages, the second light adjusting portion has a plurality of successively arranged second prism stages, and the corrugated portion has a corrugated structure. [2] Fluorescent tube with multilayer optical media structure according to claim 1, characterized by that the outer tube is cylindrical. [3] Fluorescent tube with multilayer optical media structure according to claim 1, characterized by that the corrugated portion is arranged on the inner wall or the outer wall of the inner tube. [4] Fluorescent tube with multilayer optical media structure according to claim 1, characterized by that the corrugated portion is arranged on the inner wall and the outer wall of the inner tube. [5] Fluorescent tube with multilayer optical media structure according to claim 1, characterized bythat the corrugated structure comprises a plurality of projecting portions, wherein the upper end of each projecting portion is arcuate. [6] Fluorescent tube with multilayer optical media structure according to claim 5, characterized by that the corrugated structure further comprises a plurality of planar portions, wherein the plurality of projecting portions and the plurality of planar portions are arranged alternately. [7] Fluorescent tube with multilayer optical media structure according to claim 1, characterized bythat each first prism stage has a first upper level and a first lower level connected thereto, and the distance between the first upper level and the light board is smaller than the distance between the first lower level and the light board, wherein each second prism stage has a second upper level and a second lower level connected thereto, and the distance between the second upper level and the light board is smaller than the distance between the second lower level and the light board. [8] Fluorescent tube with multilayer optical media structure according to claim 7, characterized by that the first upper plane is parallel to the vertical reference plane, the first lower plane is parallel to the horizontal reference plane, the second upper plane is parallel to the vertical reference plane and the second lower plane is parallel to the horizontal reference plane. [9] Fluorescent tube with multilayer optical media structure according to claim 7, characterized by that the first upper plane is not parallel to the vertical reference plane, the first lower plane is not parallel to the horizontal reference plane, the second upper plane is not parallel to the vertical reference plane and the second lower plane is not parallel to the horizontal reference plane. [10] Fluorescent tube with multilayer optical media structure according to claim 1, characterized by that the first light adjusting portion and the second light adjusting portion are inclined surfaces, wherein the corrugated portion is arc-shaped.

Images