CN112833342A - Lamp strip with micro lens and manufacturing method - Google Patents

Lamp strip with micro lens and manufacturing method Download PDF

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Publication number
CN112833342A
CN112833342A CN201911232546.9A CN201911232546A CN112833342A CN 112833342 A CN112833342 A CN 112833342A CN 201911232546 A CN201911232546 A CN 201911232546A CN 112833342 A CN112833342 A CN 112833342A
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CN
China
Prior art keywords
strip
micro
lenses
led
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911232546.9A
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Chinese (zh)
Inventor
王定锋
徐文红
冉崇友
徐磊
琚生涛
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to CN201911232546.9A priority Critical patent/CN112833342A/en
Publication of CN112833342A publication Critical patent/CN112833342A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/90—Methods of manufacture
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/101—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening permanently, e.g. welding, gluing or riveting
    • 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
    • F21V5/004—Refractors for light sources using microoptical elements for redirecting or diffusing light using microlenses
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • 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)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Led Device Packages (AREA)

Abstract

The invention relates to a lamp belt with micro-lens and a manufacturing method thereof, in particular to a method for designing and manufacturing a flat micro-lens mould or a cylindrical micro-lens mould, a soft resin plate is hot-pressed by the flat lens mould in sections or is rolled by the cylindrical lens mould to manufacture a plate with micro-lens, a plurality of high-density point-shaped micro-lenses are distributed on the whole plate, then cutting into single strip plate with micro-lens, using the manufactured bare lamp strip, placing the strip plate with micro-lens above the LED light emitting surface of the bare lamp strip, then feeding into an extruder together to extrude resin to wrap the bare lamp strip and the micro-lens plate strip, the lamp strip with the plurality of punctiform micro-lenses is manufactured, and light emitted by the LED passes through the high-density punctiform micro-lenses and is refracted to be completely scattered around, so that the light emitted by the LED lamp strip is fully and uniformly diffused.

Description

Lamp strip with micro lens and manufacturing method
Technical Field
The invention relates to the field of LED lamp belts, in particular to a lamp belt with a micro lens and a manufacturing method thereof.
Background
In the prior art, the LED lamp strip is manufactured, and the light emitted by the lamp beads is diffused by using an extrusion die to draw out strip-shaped grains along the direction of the lamp strip, wherein the strip-shaped grains only can diffuse the light emitted by the LED and the light emitted by the lamp strip in the vertical direction, and the light emitted by the lamp beads cannot diffuse in all directions.
In order to overcome the defects and shortcomings, in order to realize the all-directional diffusion, a resin plate is pressed out of a plurality of high-density micro lenses by a mould, then the micro lenses are arranged above the light emitting surface of the lamp bead of the bare lamp strip, a layer of light-transmitting resin is wrapped outside the micro lenses, and light emitted by the LED is refracted by the micro lenses to form all-directional diffusion, so that the light emitted by the LED lamp strip is fully diffused uniformly all around.
Disclosure of Invention
The invention relates to a lamp belt with micro-lens and a manufacturing method thereof, in particular to a method for designing and manufacturing a flat micro-lens mould or a cylindrical micro-lens mould, a soft resin plate is hot-pressed by the flat lens mould in sections or is rolled by the cylindrical lens mould to manufacture a plate with micro-lens, a plurality of high-density point-shaped micro-lenses are distributed on the whole plate, then cutting into single strip plate with micro-lens, using the manufactured bare lamp strip, placing the strip plate with micro-lens above the LED light emitting surface of the bare lamp strip, then feeding into an extruder together to extrude resin to wrap the bare lamp strip and the micro-lens plate strip, the lamp strip with the plurality of punctiform micro-lenses is manufactured, and light emitted by the LED passes through the high-density punctiform micro-lenses and is refracted to be completely scattered around, so that the light emitted by the LED lamp strip is fully and uniformly diffused.
The invention provides a method for manufacturing a lamp strip with micro-lenses, which comprises the following steps of designing and manufacturing a set of flat micro-lens molds or a set of cylindrical micro-lens molds, segmenting a soft resin plate by using the flat lens molds, carrying out hot pressing on one segment after the other segment or continuously rolling by using the cylindrical lens molds to manufacture the soft resin plate with the micro-lenses, fully distributing high-density point micro-lenses on the whole resin plate, cutting the soft resin plate into single strip soft plate strips with the micro-lenses, placing the prepared bare lamp strip on the upper part of an LED light-emitting surface of the bare lamp strip by using the long strip soft plate strip with the micro-lenses, then feeding the long strip soft plate strip with the micro-lenses into an extruder together, extruding and wrapping the bare lamp strip and the soft plate strips with the micro-lenses by using the resin, namely manufacturing the lamp strip with the micro-lenses, wherein when light emitted by the LEDs passes through a plurality of high-density point micro-, the light emitted by the lamp strip is more uniform.
According to the present invention, there is also provided a light strip with micro-lenses, comprising: a bare LED lamp strip; a soft strip with punctiform micro-lenses; wrapping a transparent resin; it is characterized in that the LED bare lamp strip is a flexible lamp strip welded on a flexible circuit board and comprises an LED lamp bead with a bracket, or a soft lamp strip containing an LED flip chip is welded on the soft circuit board, the punctiform micro-lens soft strip with high density is manufactured on the soft strip, the micro-lens soft strip is arranged above the LED of the bare lamp strip and is overlapped on the surface of the luminous surface of the LED, or the LED light source is arranged above the light emitting surface and keeps a certain distance with the light emitting surface of the LED, the outer packaging light-transmitting resin wraps the micro-lens flexible plate strip and the LED bare lamp strip, the micro-lens flexible plate strip is bonded into a whole by the outer packaging light-transmitting resin, or the LED is kept in an independent and non-adhered state, when the light emitted by the LED passes through a plurality of point-shaped micro lenses with high density, the light is dispersed from a plurality of directions completely after the refraction of microlens, makes the light that LED sent diffuse towards a plurality of directions, makes the lamp area luminous more even.
According to a preferred embodiment of the present invention, the strip with micro-lenses is characterized in that the resin of the soft strip with micro-lenses and the resin of the outer coating are the same type of resin, or different types of resin.
According to a preferred embodiment of the present invention, 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.
According to a preferred embodiment of the present invention, the strip with micro-lenses is characterized in that the micro-lenses are arranged in the strip, and after the strip is straightened, the micro-lenses are arranged on a plane or are arranged near to a plane, or the micro-lenses are arranged on a curved surface in an arch shape.
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 long slab band of single stripe microlenses.
Fig. 4 is a schematic longitudinal cross-sectional view of a single strip of elongated ribbons of microlenses.
Fig. 5 is a schematic transverse cross-sectional view of a single strip of elongated ribbons of microlenses.
Fig. 6 is a schematic front plan view of a light strip with micro-lenses.
Fig. 7 is a schematic longitudinal cross-sectional view of a semi-fused microlens strip.
Fig. 8 is a schematic transverse cross-sectional view of a semi-fused microlens-tape strip.
Fig. 9 is a schematic longitudinal cross-sectional view of a light strip without fused strip microlenses.
Fig. 10 is a schematic transverse cross-sectional view of a light strip without fused strip microlenses.
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. Manufacture of point-shaped microlens plate strip
2.1 making with flat dies
Cutting a plurality of high-density microlenses on one surface of a steel plate by laser, combining the steel plate with another steel plate to form a microlens flat plate-shaped mould, placing the mould on a press, placing a PVC long resin plate in the flat plate-shaped mould, hot-pressing at 110 ℃ to form a plurality of punctiform microlenses, hot-pressing one section after another to complete the hot pressing of the whole long resin plate, so that the whole long resin plate is formed with a plurality of high-density microlenses 3.2, and then cutting the long resin plate into a single-strip microlens-carrying long plate strip 3.1 (shown in figures 3, 4 and 5) for later use by a slitting machine.
2.2 making with cylindrical dies
Cutting a plurality of high-density microlenses from one cylindrical steel by using laser all around, combining the cylindrical steel with another cylindrical steel to form a cylindrical microlens mold, overlapping two cylindrical molds, installing the two cylindrical molds on a roller press, placing a PVC long resin plate between the two molds, continuously rolling the PVC long resin plate into a plurality of punctiform microlenses at the temperature of 110 ℃, completing the hot pressing of the whole long resin plate, forming a plurality of high-density microlenses 3.2 on the whole long resin plate, and then cutting the long resin plate into a single-strip microlens long plate strip 3.1 (shown in figures 3, 4 and 5) for later use by using a slitting machine.
3. Production of lamp strip with micro-lens
3.1 manufacturing the lamp strip with the micro-lens strip and the PVC light-transmitting resin coated outside the micro-lens strip adhered together
The method comprises the following steps of (1) enabling any one of the single bare lamp strips finished in the step 1 and the single long plate strip with the micro-lens finished in the step 2 in different methods to enter a mould in the extruder together by using an extruder and an extrusion mould, heating and melting transparent PVC resin, extruding and wrapping the single bare lamp strips and the single long plate strip with the micro-lens, enabling the melted transparent PVC resin 4.1 to be in direct contact with the smooth surface 3.1a of the single long plate strip with the micro-lens in the mould, cooling with water after exiting from the extrusion mould, and manufacturing the semi-fused lamp strip with the micro-lens, wherein the PVC transparent resin 4.1 wrapped outside the manufactured lamp strip is adhered with the PVC resin 4.2 of the single long plate strip with the micro-lens, and the micro-lens on the light emitting surface of the micro-lens faces to the lamp beads (shown in figures 6, 7 and 8).
3.2 manufacturing the lamp strip without bonding the micro-lens strip and the PVC-coated light-transmitting resin together
Any one of the bare lamp strips with single strips completed in the step 1 and the long strip with single strips and micro lenses completed in different methods in the step 2 are overlapped by using an extruder and an extrusion die, the bare lamp strips and the long strip with single strips and micro lenses are extruded and wrapped after transparent PVC resin 4.1 is heated and melted in the die in the extruder, the melted transparent PVC resin 4.1 keeps a certain distance between the die and the smooth surface 3.1a of the long strip with single strips and micro lenses, the extruded and melted PVC resin is cooled by water after being discharged from the extrusion die, the lamp strips with the micro lenses are manufactured, and the PVC transparent resin 4.1 wrapped outside the manufactured lamp strips and the smooth surface 3.1a of the long strip with single strips and micro lenses keep a certain distance (shown in figures 6, 9 and 10).
The invention has been described in detail with reference to the drawings and the specific embodiments of a light strip with micro-lenses and the 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 (5)

1. A method for manufacturing a lamp strip with micro-lenses comprises designing and manufacturing a set of flat micro-lens mold or a set of cylindrical micro-lens mold, segmenting a soft resin plate by the flat lens mold, hot-pressing one segment after another or continuously rolling by the cylindrical lens mold to manufacture the soft resin plate with micro-lenses, distributing high-density point micro-lenses on the whole resin plate, cutting into single strip of strip soft strip with micro-lenses, placing the strip soft strip with micro-lenses above the LED light-emitting surface of the strip with bare lamp by the manufactured bare lamp strip, feeding the strip soft strip with micro-lenses into an extruder together, extruding and wrapping the bare lamp strip and the soft strip with micro-lenses by resin to manufacture the lamp strip with micro-lenses, wherein the light emitted by the LED passes through the high-density point micro-lenses, is completely scattered after being refracted, and the light emitted by the LED lamp strip is diffused all around, the light emitted by the lamp strip is more uniform.
2. A light strip with micro-lenses, comprising:
a bare LED lamp strip;
a soft strip with punctiform micro-lenses;
wrapping a transparent resin;
it is characterized in that the LED bare lamp strip is a flexible lamp strip welded on a flexible circuit board and comprises an LED lamp bead with a bracket, or a soft lamp strip containing an LED flip chip is welded on the soft circuit board, the punctiform micro-lens soft strip with high density is manufactured on the soft strip, the micro-lens soft strip is arranged above the LED of the bare lamp strip and is overlapped on the surface of the luminous surface of the LED, or the LED light source is arranged above the light emitting surface and keeps a certain distance with the light emitting surface of the LED, the outer packaging light-transmitting resin wraps the micro-lens flexible plate strip and the LED bare lamp strip, the micro-lens flexible plate strip is bonded into a whole by the outer packaging light-transmitting resin, or the LED is kept in an independent and non-adhered state, when the light emitted by the LED passes through a plurality of point-shaped micro lenses with high density, the light is dispersed from a plurality of directions completely after the refraction of microlens, makes the light that LED sent diffuse towards a plurality of directions, makes the lamp area luminous more even.
3. A light strip with micro-lenses according to claim 1 or 2, wherein the resin of the soft strip of micro-lenses and the resin of the outer coating are the same type of resin or different types of resin.
4. A light strip with micro-lenses according to claim 1 or 2, wherein the bare light strip is a light strip in which the circuit board and the components are not completely wrapped around the length direction of the light strip.
5. A light strip with micro lenses according to claim 1 or 2, wherein said micro lenses are in the light strip, and after the light strip is straightened, the micro lenses are in a plane or near a plane, or the micro lenses are in a curved surface of an "arch".
CN201911232546.9A 2019-11-23 2019-11-23 Lamp strip with micro lens and manufacturing method Pending CN112833342A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911232546.9A CN112833342A (en) 2019-11-23 2019-11-23 Lamp strip with micro lens and manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911232546.9A CN112833342A (en) 2019-11-23 2019-11-23 Lamp strip with micro lens and manufacturing method

Publications (1)

Publication Number Publication Date
CN112833342A true CN112833342A (en) 2021-05-25

Family

ID=75922873

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911232546.9A Pending CN112833342A (en) 2019-11-23 2019-11-23 Lamp strip with micro lens and manufacturing method

Country Status (1)

Country Link
CN (1) CN112833342A (en)

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Application publication date: 20210525