CN112936938A - LED lamp strip with double-layer diffusion lines and manufacturing method - Google Patents
LED lamp strip with double-layer diffusion lines and manufacturing method Download PDFInfo
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- CN112936938A CN112936938A CN201911232547.3A CN201911232547A CN112936938A CN 112936938 A CN112936938 A CN 112936938A CN 201911232547 A CN201911232547 A CN 201911232547A CN 112936938 A CN112936938 A CN 112936938A
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- Prior art keywords
- diffusion
- strip
- lamp strip
- plate
- led
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D29/00—Producing belts or bands
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S4/00—Lighting devices or systems using a string or strip of light sources
- F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
- F21S4/22—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape
- F21S4/24—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape of ribbon or tape form, e.g. LED tapes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Led Device Packages (AREA)
Abstract
The invention relates to a LED lamp strip with double-layer diffusion lines and a manufacturing method thereof, in particular to a method for manufacturing a flat embossing die or a cylindrical embossing die, wherein a soft resin plate is hot-pressed by the flat embossing die in a segmentation way or is rolled by the cylindrical embossing die to manufacture a plate with the diffusion lines, a plurality of diffusion lines are distributed on the whole plate, then the plate is cut into a long strip plate belt with single diffusion lines, an extrusion die with the diffusion lines is manufactured, the manufactured bare lamp strip is used, the long strip plate belt with the diffusion lines is arranged above the LED light emitting surface of the bare lamp strip and enters an extruder together, the resin is extruded to wrap the bare lamp strip and the strip plate belt with the diffusion lines, the extruded wrapping resin also forms groove-shaped diffusion lines which are parallel or nearly parallel to the edge of the long direction of the lamp strip, namely, the LED lamp strip with the two layers of diffusion lines is manufactured, and the light emitted by an LED passes through the two layers of diffusion lines, towards a plurality of directions all formed the diffusion, made the abundant diffusion more even of the light that LED lamp area sent.
Description
Technical Field
The invention relates to the field of LED lamp belts, in particular to an LED lamp belt with double-layer diffusion stripes and a manufacturing method.
Background
In the prior art, a method for diffusing light emitted by a lamp bead is to extrude a long stripe along the direction of a lamp strip by using an extrusion die, wherein the long stripe only can diffuse light emitted by an LED in the direction perpendicular to the lamp strip, and the light emitted by the lamp bead cannot diffuse in all directions.
In order to overcome the defects and the shortcomings, in order to realize the omnibearing diffusion, a resin plate is pressed out of diffusion lines by a mould to form a plate strip with the diffusion lines, then the plate strip is arranged above the light emitting surface of a lamp bead of a bare lamp strip, an extrusion mould with groove-shaped diffusion lines is manufactured, the bare lamp strip and the plate strip with the diffusion lines are wrapped and manufactured with a layer of light-transmitting resin with the groove-shaped diffusion lines outside an extruder, light emitted by an LED is diffused by two layers of diffusion lines to form the omnibearing diffusion, and the periphery of the light emitted by the LED lamp strip is fully and uniformly diffused.
Disclosure of Invention
The invention relates to a LED lamp strip with double-layer diffusion lines and a manufacturing method thereof, in particular to a method for manufacturing a flat embossing die or a cylindrical embossing die, wherein a soft resin plate is hot-pressed by the flat embossing die in a segmentation way or is rolled by the cylindrical embossing die to manufacture a plate with the diffusion lines, a plurality of diffusion lines are distributed on the whole plate, then the plate is cut into a long strip plate belt with single diffusion lines, an extrusion die with the diffusion lines is manufactured, the manufactured bare lamp strip is used, the long strip plate belt with the diffusion lines is arranged above the LED light emitting surface of the bare lamp strip and enters an extruder together, the resin is extruded to wrap the bare lamp strip and the strip plate belt with the diffusion lines, the extruded wrapping resin also forms groove-shaped diffusion lines which are parallel or nearly parallel to the edge of the long direction of the lamp strip, namely, the LED lamp strip with the two layers of diffusion lines is manufactured, and the light emitted by an LED passes through the two layers of diffusion lines, towards a plurality of directions all formed the diffusion, made the abundant diffusion more even of the light that LED lamp area sent.
The invention provides a method for manufacturing an LED lamp strip with double-layer diffusion lines, which comprises the following steps of designing and manufacturing a set of flat diffusion line dies or a set of cylindrical diffusion line dies, segmenting a flexible resin plate by using the flat diffusion line dies, carrying out hot pressing one section after another or continuously rolling by using the cylindrical diffusion line dies to manufacture the flexible resin plate with the diffusion lines, distributing high-density diffusion lines on the whole resin plate, cutting the flexible resin plate into long flexible plate strips with single diffusion lines, placing the long flexible plate strips with the diffusion lines above an LED light-emitting surface of the bare lamp strip by using the manufactured bare lamp strip, manufacturing an extruder die with the strip diffusion lines, installing the extruder die on the extruder, feeding the bare lamp strip and the flexible plate strips with the diffusion lines into the extruder together, and extruding resin to wrap the bare lamp strip and the long flexible plate strips with the diffusion lines, a plurality of bar-shaped diffusion lines are formed on the resin of the extruded package, the edges of the bar-shaped diffusion lines and the lamp strip are parallel or close to parallel, namely the LED lamp strip with the double-layer diffusion lines is manufactured, when light emitted by the LED passes through the double-layer diffusion lines, the light is completely scattered towards a plurality of directions after being refracted, the light emitted by the LED lamp strip is diffused towards the periphery, and the light emitted by the lamp strip is more uniform.
According to the invention, the invention also provides an LED lamp strip with double-layer diffusion stripes, which comprises: a bare LED lamp strip; a soft strip plate with diffusion lines; light-transmitting resin with diffusion lines on the outer wrapping tape; the LED bare lamp strip is characterized in that a flexible lamp strip comprising LED lamp beads with a support is welded on a flexible circuit board, or a flexible lamp strip comprising an LED flip chip is welded on the flexible circuit board, a flexible strip plate with diffusion patterns is formed by manufacturing a plurality of diffusion patterns on a flexible plate strip, the flexible strip plate with diffusion patterns is arranged above the LEDs of the bare lamp strip and is overlapped on the surface of the light emitting surface of the LEDs, or is arranged above the light emitting surface and keeps a certain distance with the light emitting surface of the LEDs, light-transmitting resin externally coated with the diffusion patterns is provided with a plurality of strip-shaped diffusion patterns, the strip-shaped diffusion patterns are parallel or nearly parallel to the edge line of the lamp strip on the light emitting surface of the lamp strip and are coated with the flexible plate strip and the LED bare lamp strip, the flexible strip plate strip with diffusion patterns is bonded into a whole by the externally coated light-transmitting resin, or keeps an independent and non-bonded state, light is diffused through the double-layer diffusion stripes, so that the light emitted by the LEDs is diffused towards a plurality of directions, and the light emitted by the lamp strip is more uniform.
According to a preferred embodiment of the present invention, the LED strip with double-layer diffusion stripes is characterized in that the resin of the soft strip with diffusion stripes and the light-transmitting resin of the outer-coated diffusion stripes are the same type of resin or different types of resin.
According to a preferred embodiment of the invention, the LED lamp strip with the double-layer diffusion stripes is characterized in that the bare lamp strip is a lamp strip in which a circuit board and components are not completely wrapped around the lamp strip in the longitudinal direction of the lamp strip.
According to a preferred embodiment of the present invention, the LED strip with two layers of diffusion stripes is characterized in that, after the strip is straightened, a plurality of diffusion stripes are on a plane or near a plane, or a plurality of diffusion stripes are on a curved surface of an "arch" row.
According to a preferred embodiment of the present invention, the LED strip with double-layer diffusion stripes is characterized in that the diffusion stripes coated with diffusion resin with diffusion stripes are on a plane or near a plane when the strip is straightened, or the diffusion stripes are on a curved surface of a "arch" row.
According to a preferred embodiment of the present invention, the LED strip with double-layer diffusion stripes is characterized in that the diffusion stripes of the soft strip with diffusion stripes are a plurality of groove stripes or a plurality of dot stripes.
The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below.
Drawings
The features, objects, and advantages of the present invention will become more apparent from the description set forth below when taken in conjunction with the drawings, a brief description of which follows.
Fig. 1 is a schematic plan view of a single bare lamp strip containing LED lamp beads.
Fig. 2 is a schematic plan view of a single bare strip of light containing a flip chip.
Fig. 3 is a schematic plan view of a single long strip of diffusion textured tape.
Fig. 4 is a longitudinal cross-sectional view of a single long strip of diffusion textured strip.
Fig. 5 is a schematic transverse cross-sectional view of a single long strip of diffusion textured strip.
Fig. 6 is a schematic plan view of an LED strip with a double-layer diffusion pattern.
Fig. 7 is a schematic longitudinal section view of the lamp strip formed by bonding the flexible strip plate with diffusion lines and the PVC-coated transparent resin.
Fig. 8 is a schematic transverse cross-sectional view of the lamp strip formed by bonding the flexible strip with diffusion patterns and the PVC-coated transparent resin.
Fig. 9 is a schematic longitudinal cross-sectional view of the lamp strip in which the flexible strip with diffusion stripes and the PVC-coated transparent resin are not adhered together.
Fig. 10 is a schematic transverse cross-sectional view of the lamp strip in which the flexible strip with diffusion stripes and the PVC-coated transparent resin are not adhered together.
Detailed Description
The present invention will be described in detail below by taking preferred embodiments as examples.
It will be understood by those skilled in the art that the following descriptions are provided for purposes of illustration and description of certain preferred embodiments only and are not intended to limit the scope of the present invention.
Examples
1. Production of bare lamp belt
1.1 LED Lamp bead used for manufacturing naked lamp strip
On a connected circuit board 1.1 containing a plurality of lamp strip circuit boards, two components of an LED lamp bead 1.2 and a resistor 1.3 are pasted by an SMT process, the components are welded on the circuit board by reflow soldering, and a slitting machine is used for slitting into a single naked lamp strip (shown in figure 1) containing the LED lamp bead for standby.
1.2 manufacturing bare lamp strip by using flip chip
On disjunctor circuit board 2.1 that contains many lamp area circuit boards, with SMT technology, paste resistance 1.3 components and parts with the tin cream, then with solid brilliant machine, paste flip-chip 2.2 with the tin cream, cross reflow soldering and make components and parts welding on the circuit board, cut into the single naked lamp area (shown in fig. 2) that contains flip-chip with dividing the strip machine for subsequent use.
2, manufacturing of soft strip plate strip with diffusion lines
2.1, making with flat dies
One side of one steel plate is cut into a plate with a plurality of convex-concave grains by laser, the plate and the other steel plate are combined into a flat plate-shaped die, the flat plate-shaped die is placed on a press, a PVC long resin plate is placed in the flat plate-shaped die, a plurality of diffusion grains are formed by hot pressing at 110 ℃, the hot pressing is carried out one by one, the hot pressing of the whole long resin plate is completed, the whole long resin plate is enabled to form a plurality of high-density diffusion grains 3.1a, and then a slitting machine is used for slitting into a single long plate belt 3.1 (shown in figures 3, 4 and 5) with the diffusion grains for standby.
2.2, making with cylindrical dies
Cutting a plurality of high-density convex-concave grains on the whole circumference of a cylindrical steel surface by using laser, combining the cylindrical steel with another smooth cylindrical steel into a cylindrical die with a plurality of diffusion grains, overlapping two cylindrical dies and installing the cylindrical die on a roller press, placing a PVC long resin plate between the two dies, continuously rolling and pressing the PVC long resin plate into a wide plate belt with the diffusion grains at 110 ℃, completing the hot pressing of the whole long resin plate, forming the diffusion grains 3.1a on the whole long resin plate, and then cutting the PVC long resin plate into a long plate belt 3.1 (shown in figures 3, 4 and 5) with single diffusion grains by using a slitting machine for later use.
3, manufacturing of LED lamp strip with double-layer diffusion lines
3.1 manufacturing the lamp strip by adhering the soft strip plate with the diffusion lines and the PVC light-transmitting resin coated outside
Any bare lamp strip finished in the step 1 and the long plate strip with the diffusion veins finished in the step 2 by different methods are extruded by an extruder and an extrusion die, the extruder die is a die with concave-convex flutes, the bare lamp strip (shown in figure 1) and the single long plate strip 3.1 with the diffusion veins enter the die in the extruder together, transparent PVC resin is heated and melted and then extruded to wrap the bare lamp strip and the diffusion vein strip, the melted transparent PVC resin 4.2 directly contacts the smooth surface 3.2a of the diffusion vein strip in the die, after the extrusion die comes out, the outer wall of the transparent PVC resin 4.2 is formed with a plurality of groove-shaped diffusion veins 4.2a, the inner wall of the transparent PVC resin is fused with the smooth surface 3.2a of the diffusion vein strip and wraps the bare lamp strip and the diffusion vein strip, the LED lamp strip 4.1 with double-layer diffusion veins is manufactured, and the prepared transparent PVC resin with the diffusion veins wrapped outside, has been adhered with the PVC of the plate strip with diffusion veins, and the double layers of diffusion veins are all arranged above the luminous surface of the lamp bead (shown in figures 5, 6, 7 and 8).
3.2 manufacturing the lamp strip without adhering the soft strip plate with the diffusion lines and the PVC light-transmitting resin coated outside
Using an extruder and an extrusion die, wherein the extruder die is a die with concave-convex grooves, the bare lamp strip (shown in figure 1) and a single long plate strip 3.1 with diffusion grooves are fed into the die in the extruder together, heating and melting the transparent PVC resin, extruding and wrapping the bare lamp strip and the diffusion groove strip, and after the bare lamp strip and the diffusion groove strip are extruded out of the extrusion die, forming a plurality of groove-shaped diffusion grooves 5.2a on the transparent PVC resin 5.2, wrapping the bare lamp strip and the diffusion groove strip, cooling with water to obtain the LED lamp strip with double-layer diffusion grooves, wherein the prepared PVC transparent resin with diffusion grooves is wrapped outside the lamp strip, the long plate strip with diffusion grooves is independent and is not adhered to the wrapped transparent resin, the diffusion grooves of the wrapped transparent resin are arranged on the inner wall, and the double-layer diffusion grooves are all arranged above the lamp beads (shown in figure 6, the lamp beads of the lamp strip, and the diffusion grooves are formed on the inner wall of the lamp strip, Shown in fig. 9 and 10).
The invention is described in detail with reference to the accompanying drawings by using a specific embodiment of an LED strip with double-layer diffusion stripes and a manufacturing method thereof. It will be understood by those skilled in the art, however, that the foregoing is merely illustrative and descriptive of some specific embodiments and is not to be construed as limiting the scope of the invention, especially the scope of the claims.
Claims (7)
1. A method for manufacturing an LED lamp strip with double-layer diffusion lines comprises the steps of designing and manufacturing a set of flat diffusion line dies or a set of cylindrical diffusion line dies, segmenting a flexible resin plate by using the flat diffusion line dies, hot-pressing one segment after another or continuously rolling by using the cylindrical diffusion line dies to manufacture the flexible resin plate with the diffusion lines, distributing high-density diffusion lines on the whole resin plate, cutting the flexible resin plate into long flexible plate strips with single diffusion lines, using the manufactured bare lamp strip, placing the long flexible plate strips with the diffusion lines above an LED light-emitting surface of the bare lamp strip, manufacturing an extruder die with strip-shaped diffusion lines, installing the extruder die on the extruder, feeding the bare lamp strip and the flexible plate strips with the diffusion lines into the extruder together, extruding resin to wrap the bare lamp strip and the flexible plate strips with the diffusion lines, and forming a plurality of strip-shaped diffusion lines on the extruded and wrapped resin, the edge of bar diffusion line and lamp area is parallel or is close parallel, has made the LED lamp area of taking double-deck diffusion line promptly, and when the light that LED sent passed double-deck diffusion line, the light was dispersed towards a plurality of directions completely after the refraction, and the light that makes LED lamp area send is towards diffusion all around, and the light that makes the lamp area send is more even.
2. A LED lamp strip with double-layer diffusion stripes comprises:
a bare LED lamp strip;
a soft strip plate with diffusion lines;
light-transmitting resin with diffusion lines on the outer wrapping tape;
the LED bare lamp strip is characterized in that a flexible lamp strip comprising LED lamp beads with a support is welded on a flexible circuit board, or a flexible lamp strip comprising an LED flip chip is welded on the flexible circuit board, a flexible strip plate with diffusion patterns is formed by manufacturing a plurality of diffusion patterns on a flexible plate strip, the flexible strip plate with diffusion patterns is arranged above the LEDs of the bare lamp strip and is overlapped on the surface of the light emitting surface of the LEDs, or is arranged above the light emitting surface and keeps a certain distance with the light emitting surface of the LEDs, light-transmitting resin externally coated with the diffusion patterns is provided with a plurality of strip-shaped diffusion patterns, the strip-shaped diffusion patterns are parallel or nearly parallel to the edge line of the lamp strip on the light emitting surface of the lamp strip and are coated with the flexible plate strip and the LED bare lamp strip, the flexible strip plate strip with diffusion patterns is bonded into a whole by the externally coated light-transmitting resin, or keeps an independent and non-bonded state, light is diffused through the double-layer diffusion stripes, so that the light emitted by the LEDs is diffused towards a plurality of directions, and the light emitted by the lamp strip is more uniform.
3. The LED strip with double-layer diffusion stripes according to claim 1 or 2, wherein the resin of the soft elongated diffusion stripe and the light-transmitting resin of the outer-coated diffusion stripe are the same type of resin or different types of resins.
4. The LED lamp strip with the double-layer diffusion stripes according to claim 1 or 2, wherein the bare lamp strip is a lamp strip with a circuit board and components which are not completely wrapped around the whole length of the lamp strip.
5. The LED lamp strip with double-layer diffusion stripes according to claim 1 or 2, wherein the diffusion stripes of the soft strip with diffusion stripes are on a plane or near a plane when the lamp strip is straightened, or are on a curved surface of an "arch" row.
6. The LED strip with double-layer diffusion stripes according to claim 1 or 2, wherein the diffusion stripes coated with diffusion resin with diffusion stripes are on a plane or near a plane when the strip is straightened, or are on a curved surface of an "arch" row.
7. The LED lamp strip with the double-layer diffusion stripes according to claim 1 or 2, wherein the diffusion stripes of the soft strip with the diffusion stripes are a plurality of groove-shaped stripes or a plurality of dot-shaped stripes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911232547.3A CN112936938A (en) | 2019-11-23 | 2019-11-23 | LED lamp strip with double-layer diffusion lines and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911232547.3A CN112936938A (en) | 2019-11-23 | 2019-11-23 | LED lamp strip with double-layer diffusion lines and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112936938A true CN112936938A (en) | 2021-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911232547.3A Pending CN112936938A (en) | 2019-11-23 | 2019-11-23 | LED lamp strip with double-layer diffusion lines and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112936938A (en) |
-
2019
- 2019-11-23 CN CN201911232547.3A patent/CN112936938A/en active Pending
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210611 |
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| WD01 | Invention patent application deemed withdrawn after publication |