Flexible light strip with lens and manufacturing method thereof

Abstract

The present invention discloses a flexible light bar with a lens and a manufacturing method thereof, wherein the flexible light bar with a lens comprises a flexible transparent bottom shell extending along the length direction of the light bar and a flexible circuit board arranged in the flexible transparent bottom shell and extending along the length direction of the light bar, the flexible circuit board is provided with a plurality of LED light-emitting chips arranged in sequence, a lens and a lens holder are arranged above the LED light-emitting chip, and packaging glue is filled between the flexible transparent bottom shell and the flexible circuit board, the lens, and the lens holder. The flexible transparent bottom shell is easy to paste and fix, and no metal fasteners are required. When making a lighting source, the outer shell can be prefabricated first and then the flexible light bar with a lens can be pasted in the outer shell, making the manufacturing process more flexible, and the production and manufacturing of the outer shell and the flexible light bar are independent of each other, which also makes the flexible light bar with a lens conveniently applicable to different outer shell manufacturers.

Description

Technical Field

[0001] The invention relates to the technical field of LED lighting devices, and in particular to a flexible light strip with a lens and a manufacturing method thereof. Background Art

[0002] Various lighting sources are used to outline the shapes of buildings and bridges, and are also used in lighting projects such as parks, squares, and advertising lighting. Therefore, flexible light strips are becoming more and more widely used.

[0003] At present, the soft light strips on the market usually use LED (light-emitting diode) light source patches on flexible circuit boards, and then use packaging glue to package them. During packaging, the LED light source patches and the flexible circuit boards are packaged together. Due to the poor light transmittance of the packaging glue, the brightness of the LED light source patches is greatly affected. At the same time, when the existing flexible light strips are installed in the light strip housing, due to the limitation of the installation order, the housing needs to be manufactured first and then the light strips, which takes a long time to produce and has low production efficiency. Summary of the invention

[0004] In view of this, it is necessary to provide a flexible light strip with a lens having good light transmittance and a simple structure and a manufacturing method thereof.

[0005] A flexible light bar with a lens comprises a flexible transparent bottom shell extending along the length direction of the light bar and a flexible circuit board arranged in the flexible transparent bottom shell and extending along the length direction of the light bar, the flexible circuit board is provided with a plurality of LED light-emitting chips arranged in sequence, a lens and a lens bracket are arranged above the LED light-emitting chips, and packaging glue is filled between the flexible transparent bottom shell and the flexible circuit board, the lens and the lens bracket.

[0006] Furthermore, the cross section of the flexible transparent bottom shell is an integrally formed U-shape, the flexible transparent bottom shell has a U-shaped groove extending along the length direction of the light bar, and the flexible circuit board is arranged at the bottom of the U-shaped groove of the flexible transparent bottom shell.

[0007] Furthermore, the U-shaped groove of the flexible transparent bottom shell includes a groove bottom surface and groove walls arranged on both sides of the groove bottom surface, and a groove extending along the length direction of the light strip is provided at the connection between the groove wall and the groove bottom surface, and the flexible circuit board is inserted into the groove.

[0008] Furthermore, the lens comprises a lens colloid and a bowl-shaped or cup-shaped reflective lens sleeve, wherein the lens colloid is contained in the lens sleeve, a concave cavity is dug inwardly at the bottom of the lens colloid, and the concave cavity cover is arranged above the LED light-emitting chip.

[0009] Furthermore, the lens bracket is a square sheet with protruding corners, a light source through hole is provided in the center of the square sheet, and a protruding boss is provided along the hole edge of the light source through hole.

[0010] Furthermore, the bottom surface of the lens sleeve has a sleeve through hole, and the sleeve through hole corresponds to the concave cavity at the bottom of the lens colloid; the bottom surface of the lens sleeve has an annular groove, and the annular groove is arranged on the outside of the sleeve through hole. The shape of the annular groove is the same as the shape of the boss of the lens holder, and the annular groove is buckled on the boss so that the lens and the lens holder are tightly combined into one.

[0011] Furthermore, the protruding four corners of the square sheet of the lens holder are embedded in the groove.

[0012] Furthermore, the inner side surface of the lens sleeve is a reflective surface, the middle area of ​​the upper surface of the lens colloid is bowl-shaped and concave, the bottom surface of the bowl-shaped concave has a bulge corresponding to the cavity, and the bulge is hemispherical or quasi-hemispherical.

[0013] And, a method for manufacturing a flexible light strip with a lens, which is used to manufacture the flexible light strip with a lens as described above, is characterized in that it specifically comprises the following steps:

[0014] Step 1, injection molding the flexible transparent bottom shell and the lens bracket, and providing a top mold;

[0015] Step 2, providing the lens sleeve, and injecting lens colloid into the lens sleeve to form the lens;

[0016] Step three, preparing the flexible circuit board;

[0017] Step 4, installing the lens on the lens bracket, and installing the lens bracket on the flexible circuit board;

[0018] Step 5, installing the flexible circuit board in the flexible transparent bottom shell;

[0019] Step 6, snapping the top mold onto the lens;

[0020] Step seven, filling the packaging glue into the gaps between the flexible transparent bottom shell and the flexible circuit board, the lens, and the lens bracket;

[0021] Step eight, after the packaging glue is solidified, the top mold is removed to obtain the flexible light strip with lens.

[0022] Furthermore, the top mold is a mold extending along the length direction of the flexible light strip, and the top mold has a plurality of concave lens blind holes, the positions of the lens blind holes correspond one-to-one to the positions of the lenses, and the lens blind holes are buckled on the lenses to prevent the packaging glue from covering the lenses.

[0023] In the above-mentioned flexible light strip with lens, the flexible transparent bottom shell is easy to be pasted and fixed, and no metal fasteners are required. When making a lighting source, the outer shell can be prefabricated first and then the flexible light strip with lens can be pasted in the outer shell, making the manufacturing process more flexible. The production and manufacturing of the outer shell and the flexible light strip are independent of each other, which also makes the flexible light strip with lens conveniently applicable to different outer shell manufacturers. When manufacturing the flexible light strip with lens, the top mold is snapped onto the lens to prevent the packaging glue from covering the top surface of the lens, thereby affecting the brightness of the light emitted by the flexible light strip with lens. The structure of the present invention is simple, easy to implement, low cost, and easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the structure of a flexible light strip with a lens according to an embodiment of the present invention.

[0025] Figure 2 It is a structural exploded diagram of a flexible light strip with a lens according to an embodiment of the present invention.

[0026] Figure 3 Schematic diagram of the structure of a flexible light strip with a lens according to an embodiment of the present invention (without packaging glue).

[0027] Figure 4 4 is a cross-sectional view of a flexible light strip with a lens according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] This embodiment takes a flexible light strip with a lens and a manufacturing method thereof as an example, and the present invention will be described in detail below in conjunction with specific embodiments and drawings.

[0029] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , showing a flexible light bar with a lens and a manufacturing method thereof provided by an embodiment of the present invention, the flexible light bar with a lens 100 comprises a flexible transparent bottom shell 10 extending along the length direction of the light bar and a flexible circuit board 20 arranged in the flexible transparent bottom shell 10 and extending along the length direction of the light bar, the flexible circuit board 20 is provided with a plurality of LED light-emitting chips 21 arranged in sequence, a lens 40 and a lens bracket 30 are installed above the LED light-emitting chip 21, and packaging glue 50 is filled between the flexible transparent bottom shell 10 and the flexible circuit board 20, the lens 40, and the lens bracket 30.

[0030] Furthermore, the cross section of the flexible transparent bottom shell 10 is an integrally formed U-shape, and the flexible transparent bottom shell 10 has a U-shaped groove extending along the length direction of the light bar, and the flexible circuit board 20 is arranged at the bottom of the U-shaped groove of the flexible transparent bottom shell 10. The U-shaped groove of the flexible transparent bottom shell 10 includes a groove bottom surface 11 and groove walls 12 arranged on both sides of the groove bottom surface 11, and a groove 13 extending along the length direction of the light bar is provided at the connection between the groove wall 12 and the groove bottom surface 11, and the flexible circuit board 20 is inserted into the groove 13.

[0031] Furthermore, the lens 40 includes a lens colloid 42 and a bowl-shaped or cup-shaped reflective lens sleeve 41, wherein the lens colloid 42 is contained in the lens sleeve 41, and a concave cavity 421 is dug inwardly at the bottom of the lens colloid 42, and the concave cavity 421 is covered above the LED light-emitting chip 21. The inner side surface of the lens sleeve 41 is a reflective surface, and the middle area of ​​the upper surface of the lens colloid 42 is bowl-shaped and concave, and the bottom surface of the bowl-shaped concave has a ridge 422 corresponding to the concave cavity 421, and the ridge 422 is hemispherical or quasi-hemispherical.

[0032] Specifically, the raised portion 422 is disposed above the LED light emitting chip 21 and functions as a convex lens 40 to emit the light emitted by the LED light emitting chip 21 in parallel, thereby increasing the intensity of the emitted light.

[0033] Preferably, the lens 40 is in the shape of a gold ingot, and the lens sleeve 41 is a metal thin wall with a reflective surface.

[0034] Furthermore, the lens support 30 is a square sheet 31 with protruding corners, a light source through hole 32 is provided in the center of the square sheet 31 , and a protruding boss 33 is provided along the hole edge of the light source through hole 32 .

[0035] Furthermore, the bottom surface of the lens sleeve 41 has a sleeve through hole, and the sleeve through hole corresponds to the concave cavity 421 at the bottom of the lens colloid 42; the bottom surface of the lens sleeve 41 has an annular groove 412, and the annular groove 412 is arranged outside the sleeve through hole. The shape of the annular groove 412 is the same as the shape of the boss 33 of the lens holder 30. The annular groove 412 is buckled on the boss 33, so that the lens 40 and the lens holder 30 are tightly combined into one. The protruding four corners of the square sheet 31 of the lens holder 30 are embedded in the groove 13.

[0036] Specifically, the annular groove 412 at the bottom of the lens 40 cooperates with and fits tightly with the boss 33 of the lens holder 30, and the lens 40 can be firmly mounted on the flexible circuit board 20 by utilizing the larger bottom surface of the lens holder 30. When the flexible light strip 100 with lens is bent, the lens 40 will not detach due to the bending of the flexible circuit board 20.

[0037] Preferably, the flexible transparent bottom shell 10 is preferably a silicone shell.

[0038] And, a manufacturing method of a flexible light strip 100 with a lens, used to manufacture the flexible light strip 100 with a lens as described above, characterized in that it specifically comprises the following steps:

[0039] Step 1: injection molding the flexible transparent bottom shell 10 and the lens bracket 30, and providing a top mold;

[0040] Step 2, providing the lens sleeve 41, and injecting the lens colloid 42 into the lens sleeve 41 to form the lens 40;

[0041] Step three, preparing the flexible circuit board 20;

[0042] Step 4: Install the lens 40 on the lens bracket 30, and install the lens bracket 30 on the flexible circuit board 20;

[0043] Step 5: Install the flexible circuit board 20 in the flexible transparent bottom shell 10;

[0044] Step 6, snapping the top mold onto the lens 40;

[0045] Step seven, filling the packaging glue 50 into the gaps between the flexible transparent bottom shell 10 and the flexible circuit board 20, the lens 40, and the lens bracket 30;

[0046] Step eight, after the packaging glue 50 is solidified, the top mold is removed to obtain the flexible light strip 100 with lens.

[0047] Specifically, the flexible transparent bottom shell 10 is arranged below the flexible circuit board 20, the LED light-emitting chip 21, the lens holder 30 and the lens 40, and the top mold is arranged above the lens 40. The top mold has a thickness. The flexible transparent bottom shell 10 and the top mold form a space, and the flexible circuit board 20, the LED light-emitting chip 21, the lens holder 30 and the lens 40 are covered in the space. The packaging glue 50 is filled into the space to play a role of sealing, waterproofing and dustproofing.

[0048] Specifically, in the process of the manufacturing method of the above-mentioned flexible light strip 100 with lens, although steps one to eight are marked, it can be understood that the process is not limited to the above-mentioned step sequence, nor does it mean that steps one to eight need to be performed in sequence, some of which can be performed synchronously or one after the other. For example, there is no order relationship between step one, step two and step three.

[0049] Furthermore, the top mold (not shown) is a mold extending along the length direction of the flexible light strip, and the top mold has a plurality of concave lens blind holes, the positions of the lens blind holes correspond one-to-one to the positions of the lenses 40, and the lens blind holes are snapped onto the lenses 40 to prevent the packaging glue 50 from covering the lenses 40.

[0050] Specifically, the lens blind hole is tightly fitted on the top surface of the lens 40 .

[0051] In the above-mentioned flexible light strip 100 with lens, the flexible transparent bottom shell 10 is easy to be pasted and fixed, and no metal fasteners are required. When making a lighting source, the outer shell can be prefabricated first and then the flexible light strip 100 with lens can be pasted in the outer shell, making the manufacturing process more flexible. The production and manufacturing of the outer shell and the flexible light strip are independent of each other, which also makes the flexible light strip 100 with lens conveniently applicable to different outer shell manufacturers. When manufacturing the flexible light strip 100 with lens, the top mold is buckled onto the lens 40 to prevent the packaging glue 50 from covering the top surface of the lens 40, thereby affecting the brightness of the light emitted by the flexible light strip 100 with lens. The structure of the present invention is simple, easy to implement, low cost, and easy to promote.

[0052] It should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flexible light strip with a lens, characterized in that: The invention comprises a flexible transparent bottom shell extending along the length direction of the light bar and a flexible circuit board arranged in the flexible transparent bottom shell and extending along the length direction of the light bar, wherein the flexible circuit board is provided with a plurality of LED light-emitting chips arranged in sequence, a lens and a lens bracket are arranged above the LED light-emitting chip, and packaging glue is filled between the flexible transparent bottom shell and the flexible circuit board, the lens and the lens bracket; the U-shaped groove of the flexible transparent bottom shell comprises a groove bottom surface and groove walls arranged on both sides of the groove bottom surface, a groove extending along the length direction of the light bar is arranged at the connection between the groove wall and the groove bottom surface, and the flexible circuit board is inserted into the bottom surface of the groove wall. The lens comprises a lens colloid and a bowl-shaped or cup-shaped reflective lens sleeve, the lens colloid is contained in the lens sleeve, a concave cavity is dug inward at the bottom of the lens colloid, and the concave cavity cover is arranged above the LED light-emitting chip; the inner side surface of the lens sleeve is a reflective surface, the middle area of ​​the upper surface of the lens colloid is bowl-shaped and concave, the bottom surface of the bowl-shaped concave has a bulge corresponding to the concave cavity, and the bulge is hemispherical or quasi-hemispherical; the lens holder is a square thin sheet with protruding corners, and the protruding four corners of the square thin sheet of the lens holder are embedded in the groove.

2. The flexible light strip with lens as claimed in claim 1, characterized in that: The cross section of the flexible transparent bottom shell is an integrally formed U-shape, and the flexible transparent bottom shell has a U-shaped groove extending along the length direction of the light bar, and the flexible circuit board is arranged at the bottom of the U-shaped groove of the flexible transparent bottom shell.

3. The flexible light strip with lens as claimed in claim 1, characterized in that: A light source through hole is provided in the center of the square sheet, and a protruding boss is provided along the hole edge of the light source through hole.

4. The flexible light strip with lens as claimed in claim 3, characterized in that: The bottom surface of the lens sleeve is provided with a sleeve through hole, and the sleeve through hole corresponds to the concave cavity at the bottom of the lens colloid; the bottom surface of the lens sleeve is provided with an annular groove, and the annular groove is arranged on the outer side of the sleeve through hole, and the shape of the annular groove is the same as the shape of the boss of the lens holder, and the annular groove is buckled on the boss so that the lens and the lens holder are tightly combined into one.

5. A method for manufacturing a flexible light strip with a lens, used for manufacturing the flexible light strip with a lens as claimed in any one of claims 1 to 4, characterized in that: The specific steps include: Step 1, injection molding the flexible transparent bottom shell and the lens bracket, and providing a top mold; Step 2, providing the lens sleeve, and injecting lens colloid into the lens sleeve to form the lens; Step three, preparing the flexible circuit board; Step 4, installing the lens on the lens bracket, and installing the lens bracket on the flexible circuit board; Step 5, installing the flexible circuit board in the flexible transparent bottom shell; Step 6, snapping the top mold onto the lens; Step seven, filling the packaging glue into the gaps between the flexible transparent bottom shell and the flexible circuit board, the lens, and the lens bracket; Step eight, after the packaging glue is solidified, the top mold is removed to obtain the flexible light strip with lens.

6. The method for manufacturing a flexible light strip with a lens as claimed in claim 5, characterized in that: The top mold is a mold extending along the length direction of the flexible light strip, and the top mold has a plurality of concave lens blind holes, the positions of the lens blind holes correspond one to one with the positions of the lenses, and the lens blind holes are buckled on the lenses to prevent the packaging glue from covering the lenses.

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