CN115234862A - LED light bar with single-side light blocking function and manufacturing method thereof - Google Patents

LED light bar with single-side light blocking function and manufacturing method thereof Download PDF

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Publication number
CN115234862A
CN115234862A CN202110073400.5A CN202110073400A CN115234862A CN 115234862 A CN115234862 A CN 115234862A CN 202110073400 A CN202110073400 A CN 202110073400A CN 115234862 A CN115234862 A CN 115234862A
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CN
China
Prior art keywords
light
blocking
glue
led
transmitting
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Pending
Application number
CN202110073400.5A
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Chinese (zh)
Inventor
王定锋
徐文红
冉崇友
徐磊
宋健
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Tongling Ruichang Circuit Technology Co ltd
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Tongling Ruichang Circuit Technology Co ltd
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Publication date
Application filed by Tongling Ruichang Circuit Technology Co ltd filed Critical Tongling Ruichang Circuit Technology Co ltd
Priority to CN202110073400.5A priority Critical patent/CN115234862A/en
Publication of CN115234862A publication Critical patent/CN115234862A/en
Pending legal-status Critical Current

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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
    • 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
    • F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
    • 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
    • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • 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
    • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • F21V1/26—Manufacturing shades
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F21V23/004—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board
    • F21V23/005—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board the substrate is supporting also the light source
    • 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
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/005—Sealing arrangements therefor
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
    • F21V9/32—Elements containing photoluminescent material distinct from or spaced from the light source characterised by the arrangement of the photoluminescent material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/10—Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
    • 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)
  • Spectroscopy & Molecular Physics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Led Device Packages (AREA)

Abstract

The invention relates to a single-side light-blocking LED light bar and a manufacturing method thereof, and particularly relates to a single-side light-blocking LED light bar and a manufacturing method thereof.

Description

LED light bar with single-side light blocking function and manufacturing method thereof
Technical Field
The invention relates to the field of light bars, in particular to a single-side light-blocking LED light bar and a manufacturing method thereof.
Background
1. The traditional rubber-coated light bar enables direct light of an LED to be emitted outwards, so that the light bar is very dazzling, and is hidden in a groove for installation when being used and installed indoors, and the groove is used for blocking light and blocking direct light.
2. The traditional low-voltage light bar also has the problem that when the bare light bar is directly used, direct light of an LED is emitted outwards, so that the light bar is very dazzling, and when the low-voltage light bar is used and installed indoors, the light bar is hidden in a groove for installation and use, and the groove is used for blocking light and blocking direct light.
How to make a lamp strip which is directly and obviously installed in a groove without being hidden is a direction which is always pursued in the industry.
In order to overcome the defects and shortcomings, the invention adopts the following method to manufacture the LED light bar with one side blocking light, solves the problem that the light bar can not be installed and used in the room, and comprises the following specific steps:
welding LEDs or LEDs and control elements on a connected circuit board of a plurality of light bar circuit boards to form a connected bare light bar, applying light-transmitting glue to seal the LEDs, wherein the light-transmitting glue forms a plurality of strip-shaped glues, a plurality of grooves are formed between the strip-shaped glues, the light-blocking glue is applied in the grooves and is adhered to the surface of the circuit board and the surface of the light-transmitting glue, the light-blocking glue is cured and then cut into single light bars, and the LED light bar with a single side light-emitting function is manufactured.
Disclosure of Invention
The invention relates to a single-side light-blocking LED light bar and a manufacturing method thereof, and particularly relates to a single-side light-blocking LED light bar and a manufacturing method thereof.
The invention provides a manufacturing method of an LED light bar with single-side light blocking, which comprises the steps of welding an LED or the LED and a control element on a connected circuit board of a plurality of light bar circuit boards to form a connected bare light bar, applying a light-transmitting adhesive to seal the LED, forming a plurality of strip-shaped adhesives by the light-transmitting adhesive, forming a plurality of grooves among the strip-shaped adhesives, applying the light-blocking adhesive in the grooves, adhering the light-blocking adhesive on the surface of the circuit board and the surface of the light-transmitting adhesive, cutting the light-blocking adhesive into single light bars after the light-blocking adhesive is cured, or manufacturing a layer of decorative light-blocking resin ink or adhering a decorative light-blocking film after the light-blocking adhesive is cured, then applying the light-transmitting adhesive in the grooves, adhering the light-transmitting adhesive on the surface of the circuit board and the surface of the light-blocking adhesive and the surface of the LED light bar after the light-transmitting adhesive is cured, manufacturing a layer of light-blocking resin ink or adhering a layer of decorative light-blocking resin ink or adhering a decorative light-blocking film on the light-blocking adhesive, cutting the light-blocking adhesive into a single light bar, wherein the light-blocking adhesive is manufactured by the light-transmitting adhesive, and the light bar, and the light-blocking adhesive is characterized in that the LED or the light-blocking adhesive is exposed outside the single-transmitting adhesive, and the single-side of the LED light-blocking adhesive, and the LED light-transmitting adhesive, and the single light-blocking adhesive is exposed on the single light-transmitting adhesive, and the single light-transmitting adhesive, wherein the single light-blocking adhesive is exposed on the single light-side of the LED light-blocking adhesive.
The invention also provides a single-side light-blocking LED lamp bar, which comprises: a circuit board; an LED or an LED and a control element; a light-transmitting adhesive; light-blocking glue; the LED light source is characterized in that the LED or the LED and the control element are welded on the circuit board, the light-transmitting glue is adhered to the circuit board and the LED, the light-transmitting glue is exposed on one side face of the light bar or exposed on the side face and the front face of the light bar, the light-blocking glue is adhered to the circuit board and the light-transmitting glue, the light-blocking glue is exposed on the side face of the other side face of the light bar and the front face of the light bar, the light-blocking glue blocks light emitted by the LED towards one side face and blocks part of or all of light emitted by the front face, and after the light bar is electrified, light emitted by the LED penetrates through the light-transmitting glue and is emitted outwards from the surface of the light-transmitting glue exposed by the light bar.
The invention also provides a single-side light blocking LED lamp bar, which comprises: a circuit board; an LED or an LED and a control element; a light-transmitting adhesive; light-blocking glue; decorative light-shielding resin ink or decorative light-shielding film; the LED lamp is characterized in that the LED or the LED and the control element are welded on the circuit board, the light-transmitting glue is adhered to the circuit board and the LED, the light-transmitting glue is exposed on one side face of the lamp strip or exposed on the side face and the front face of the lamp strip, the light-blocking glue is adhered to the circuit board and the light-transmitting glue, the light-blocking glue is exposed on the other side face of the lamp strip, the light-blocking glue blocks light emitted by the LED towards one side face, the decorative light-blocking resin ink or the decorative light-blocking film is adhered to the light-blocking glue or adhered to the light-transmitting glue or adhered to the light-blocking glue and the light-transmitting glue, and after the lamp strip is electrified, light emitted by the LED penetrates through the light-transmitting glue and is emitted outwards from the surface of the light-transmitting glue exposed out of the lamp strip.
According to a preferred embodiment of the invention, the single-sided light-blocking LED light bar is characterized in that the circuit board is a rigid circuit board or a flexible circuit board.
According to a preferred embodiment of the invention, the single-side light-blocking LED light bar is characterized in that, on the same cutting surface on one side surface in the longitudinal direction of the light bar, the side surface of the light-transmitting adhesive and the side surface of the circuit board, and on the same cutting surface on the other side surface in the longitudinal direction of the light bar, the side surface of the light-blocking adhesive and the side surface of the circuit board are on the same cutting surface.
According to a preferred embodiment of the invention, the single-sided light-blocking LED light bar is characterized in that, on one side surface in the length direction of the light bar, the side surface of the light-transmitting adhesive and the side surface of the circuit board, on the same cutting surface, the other side surface in the length direction of the light bar, the side surface of the light-blocking adhesive and the side surface of the circuit board, and the side surface of the decorative light-blocking resin ink or the decorative light-blocking film are on one cutting surface.
According to a preferred embodiment of the invention, the single-sided light-blocking LED light bar is characterized in that the side surface of the light-transmitting adhesive, the side surface of the circuit board and the side surface of the decorative light-blocking resin ink or the decorative light-blocking film are on one cutting surface, and the other side surface of the light bar in the longitudinal direction of the light bar is on one cutting surface.
According to a preferred embodiment of the present invention, the LED light bar with single-sided light blocking function is characterized in that the decorative light-shielding film is an organic material thin film, a metal film, or a composite film of metal and organic material.
According to a preferred embodiment of the present invention, the decorative light shielding film is a film made of fiber mixed resin glue, or a film made of leather, or a film made of paper.
According to a preferred embodiment of the invention, the single-side light-blocking LED light bar is characterized in that the decorative light-blocking film and the light-blocking film are adhered by the adhesive.
According to a preferred embodiment of the invention, the single-sided light-blocking LED light bar is characterized in that the light-transmitting glue is two layers of glue, wherein one layer of glue is glue with phosphor powder.
According to a preferred embodiment of the invention, the LED light bar capable of blocking light on one side is characterized in that the LED is an LED lamp bead or an LED flip chip.
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 one-piece bare light bar.
Fig. 2 is a schematic cross-sectional view of the integral bare light bar.
FIG. 3 is a schematic cross-sectional view of the integrated bare lamp strip after curing of light-blocking glue.
Fig. 4 is a schematic cross-sectional view of the conjoined bare lamp strip with the light-transmitting glue and the light-blocking glue being flush.
FIG. 5 is a schematic cross-sectional view of a connected bare lamp strip with a light-transmitting adhesive higher than a light-blocking adhesive.
FIG. 6 is a schematic cross-sectional view of the integrated bare lamp strip after curing of the light-transmitting adhesive.
Fig. 7 is a schematic cross-sectional view of the conjoined bare lamp strip with the light-blocking glue and the light-transmitting glue being flush.
FIG. 8 is a schematic cross-sectional view of a connected bare lamp strip with a light-blocking adhesive higher than a light-transmitting adhesive.
Fig. 9 is a schematic cross-sectional view of a black PU light-shielding layer with glue pasted on the whole upper plate of the integrated light bar after the light-blocking glue and the light-transmitting glue are manufactured.
Fig. 10 is a schematic cross-sectional view of a single-side light-blocking LED light bar with a black PU light-blocking film with adhesive on the front surface.
Fig. 11 is a schematic cross-sectional view of a partial light shielding layer formed on the integrated light bar after the light blocking glue and the light transmitting glue are formed.
Fig. 12 is a schematic cross-sectional view of a single-side light-blocking LED light bar with a partial light-blocking layer on the front surface.
Fig. 13 is a schematic plan view of a one-piece bare light bar of an LED flip chip.
Fig. 14 is a schematic cross-sectional view of a one-piece bare light bar of an LED flip chip.
Fig. 15 is a schematic cross-sectional view of a one-piece light bar containing phosphor glue.
Fig. 16 is a schematic cross-sectional view of a fluorescent powder glue-containing integral light bar cured after light-blocking glue is dropped.
Fig. 17 is a schematic cross-sectional view of the one-piece light bar containing the phosphor glue, wherein the light-blocking glue and the transparent glue are flush.
Fig. 18 is a schematic cross-sectional view of a connected light bar containing phosphor glue with a higher light-transmitting glue than light-blocking glue.
Fig. 19 is a schematic cross-sectional view of a fluorescent powder glue-containing integral light bar cured after a light-transmitting glue is dripped.
Fig. 20 is a schematic cross-sectional view of the one-piece light bar containing phosphor glue with the light-blocking glue and the light-transmitting glue being flush.
Fig. 21 is a schematic cross-sectional view of a one-piece light bar with phosphor glue having a higher light blocking glue than light transmitting glue.
Fig. 22 is a schematic cross-sectional view of a connected light strip with a light-shielding layer on the front surface.
Fig. 23 is a schematic cross-sectional view of a single-sided light-blocking LED light bar with a light-shielding layer on the front surface.
Fig. 24 is a schematic cross-sectional view of a unitary light strip with a light-shielding layer partially on the front surface.
Fig. 25 is a schematic cross-sectional view of a single-sided light-blocking LED light bar with a light-shielding layer on a front portion thereof.
Fig. 26 is a schematic cross-sectional view of a single-side light-blocking LED lamp bead light bar formed by a front light-blocking glue and used for partial light blocking.
Fig. 27 is a schematic cross-sectional view of a single-sided light-blocking LED lamp bead light bar formed by a front light-blocking glue.
Fig. 28 is a schematic cross-sectional view of a single-sided light-blocking LED flip-chip light bar with partial light blocking formed by front light-blocking glue.
Fig. 29 is a schematic cross-sectional view of a single-sided light-blocking LED flip-chip light bar with complete light blocking formed by front-side light-blocking glue.
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 only exemplary and descriptive of some preferred embodiments and are not intended to limit the claims of the present invention in any way.
Example one
1. Manufacturing of bare lamp strip
Solder paste is printed on a conjoined flexible circuit board 1.1 containing a plurality of lamp strip circuit boards, then an easily accessible chip mounter is used for pasting an LED1.2 or a resistor 1.3, and the LED1.2 and the resistor 1.3 are welded on the circuit board 1.1 through reflow soldering to form a conjoined bare lamp strip (shown in figures 1 and 2).
2. Preparation of light-blocking glue and light-transmitting glue
2.1, method one: dripping light-blocking glue and then dripping light-transmitting glue
And (3) dripping light-blocking glue 2.1 by using a glue dripping machine at the position where the light-blocking glue is required to be dripped on the conjoined naked light bar, baking and curing the light-blocking glue 2.1 in an oven (shown in figure 3), dripping transparent glue 3.1 at the position where the transparent glue is required to be dripped between the light-blocking glue 2.1, and then heating to cure the transparent glue 3.1 to prepare the conjoined light bar (shown in figures 4 and 5) in which the light-blocking glue is firstly dripped and then the transparent glue is dripped.
2.2, method two: dripping the light-transmitting glue and then dripping the light-blocking glue
And dripping a transparent adhesive 3.1 at the position on the connected bare lamp strip where the transparent adhesive is required to be dripped by using a glue dripping machine, after the transparent adhesive 3.1 is baked and cured in an oven (shown in figure 6), dripping a light blocking adhesive 2.1 at the position where the light blocking adhesive is required to be dripped between the transparent adhesives, and then heating to cure the light blocking adhesive 2.1 to prepare the connected lamp strip (shown in figures 7 and 8) in which the transparent adhesive is firstly dripped and then the light blocking adhesive is dripped. And dividing the black matrix into two parts, wherein one part is directly divided into single strips, and the other part is continuously manufactured downwards to form the shading layer.
Supplementary explanation: the conjoined light bar with the light-transmitting glue dripped first and then the light-blocking glue dripped can be cut into single bars directly by a slitting machine without independently applying a light-blocking layer, so that a single-side light-blocking LED light bar (shown in fig. 26) with partial light-blocking formed by the front light-blocking glue or a single-side light-blocking LED light bar (shown in fig. 27) with complete light-blocking formed by the front light-blocking glue is manufactured.
3. Manufacture of light-shielding layer
3.1, a first method: entire plate light-shielding layer
And (3) sticking a black PU light shielding layer 4.1 with glue on the whole plate on the connected light bar manufactured by the light blocking glue 2.1 and the light-transmitting glue 3.1 to cover the light-transmitting glue and the circuit board (shown in figure 9), heating to solidify the glue, cutting the glue into single light bars, and manufacturing the LED light bar (shown in figure 10) with the black PU light shielding layer fully stuck with the glue on the front surface and one side blocking light.
3.2, method two: partial light shielding layer
On the integrated light bar made of the light blocking glue 2.1 and the light transmitting glue 3.1, a plurality of black PU light blocking films 4.1 with glue are locally pasted and covered on the surfaces of the light blocking glue 2.1 and the light transmitting glue 3.1, or the light blocking resin ink 4.1 is sprayed and painted on the designed local light blocking position (shown in figure 11) by a spray painting machine, and the integrated light bar is singly cut into light bars to be made into a single-side light blocking LED light bar with a front local light blocking layer (shown in figure 12).
Example two
1. Manufacturing of bare lamp strip
On a connected flexible circuit board 1.1 containing a plurality of light bar circuit boards, an LED flip chip 1.2a and a resistor 1.3 are die-bonded on the circuit board by using a die bonder through solder paste, and reflow soldering is carried out to firmly weld the LED flip chip 1.2a and the resistor 1.3 on the flexible circuit board so as to manufacture a connected bare light bar of the LED flip chip (shown in figures 13 and 14).
2. Preparation of fluorescent powder glue
And (3) dripping fluorescent powder glue 1.4 on the LED flip chip, and heating by using an oven to solidify the fluorescent powder glue 1.4 to prepare the connected lamp strip containing the fluorescent powder glue (shown in figure 15).
3. Preparation of light-blocking glue and light-transmitting glue
3.1, a first method: dripping light-blocking glue first and then dripping light-transmitting glue
And (3) dripping light-blocking glue 2.1 by using a glue dripping machine at the position where the light-blocking glue is required to be dripped on the connected light bar containing the fluorescent powder glue, baking and curing the light-blocking glue 2.1 in an oven (shown in figure 16), dripping transparent glue 3.1 at the position where the transparent glue is required to be dripped between the light-blocking glue, and then heating to cure the transparent glue 3.1 to prepare the connected light bar containing the fluorescent powder glue (shown in figures 17 and 18) in which the light-blocking glue is firstly dripped and then the transparent glue is dripped.
3.2, method two: dripping the light-transmitting glue and then dripping the light-blocking glue
And dripping a transparent adhesive 3.1 on the position of the integrated lamp strip containing the fluorescent powder adhesive, wherein the transparent adhesive 3.1 is required to be dripped by a glue dripping machine, after the transparent adhesive 3.1 is baked and cured in an oven (shown in figure 19), dripping a light blocking adhesive 2.1 on the position of the transparent adhesive 3.1 where the light blocking adhesive is required to be dripped, and then heating to cure the light blocking adhesive 2.1 to prepare the integrated lamp strip containing the fluorescent powder adhesive, wherein the transparent adhesive is firstly dripped and then the light blocking adhesive is dripped (shown in figures 20 and 21).
Supplementary notes: the conjoined light bar containing the fluorescent powder glue and dripping the light blocking glue after dripping the transparent glue can be directly cut into single bars by a slitting machine without independently applying a light blocking layer to manufacture a single-side light blocking LED lamp bead light bar (shown in figures 26 and 27) or a single-side light blocking LED flip chip light bar (shown in figures 28 and 29).
4. Manufacture of light-shielding layer
4.1, method one: making the front surface entirely of the light-shielding layer
On the surface of the connected light bar containing the fluorescent powder glue, which is made of the transparent glue and the light-blocking glue, a layer of light-blocking resin printing ink is made on the surface of the connected light bar, a light-blocking layer 4.1 (shown in figure 22) is formed, the connected light bar is cut into single light bars to be made into LED light bars (shown in figure 23) with the front surfaces being all light-blocking layers and one single side, and the manufactured light bars are characterized in that when the light bars are powered on, light emitted by an LED flip chip is emitted outwards from the position with the transparent glue on the surface.
4.2, method two: making a front part with a light-shielding layer
The manufacturing method is characterized in that a plurality of black PU light shielding films 4.1 with glue are locally pasted on the surfaces of the connected light bars containing the fluorescent powder glue, which are manufactured by the light-transmitting glue and the light-blocking glue, and pressed on the surfaces of the light-blocking glue and the light-transmitting glue, or the light-blocking resin ink 4.1 is sprayed and painted by a spray painting machine at a designed light-blocking position, a part of the light-transmitting glue is exposed from the front (shown in figure 24), then the light bars are cut into single light bars to manufacture the LED light bar (shown in figure 25) with the front partially being the light-blocking layer and a single-side light-blocking function, the manufactured light bar is characterized in that the side face with one side of the light bar is completely exposed, a part of the front face of the light bar is exposed from the light-transmitting glue, and the light emitted by the LED passes through the side face and the front face with one side of the light-blocking glue to be emitted outwards.
The present invention is described in detail above with reference to the accompanying drawings by using a specific embodiment of a single-side light-blocking LED light bar. It will be understood by those skilled in the art, however, that the foregoing descriptions are merely illustrative of and descriptive of certain embodiments and that the invention, including the claims, is not to be in any way limiting.

Claims (12)

1. A manufacturing method of an LED light bar with single-side light blocking is characterized in that an LED or an LED and a control element are welded on a connected circuit board of a plurality of light bar circuit boards to form a connected bare light bar, light-transmitting glue is applied to seal the LED, a plurality of strip-shaped glue is formed by the light-transmitting glue, the light-blocking glue is applied to the surfaces of the circuit boards and the surfaces of the light-transmitting glue in grooves, the light-blocking glue is adhered to the surfaces of the circuit boards and the surfaces of the light-transmitting glue, the light-blocking glue is cut into single light bars after being cured, or a layer of decorative light-blocking resin ink is manufactured or a layer of decorative light-blocking resin ink is adhered to the surfaces of the circuit boards and the light-blocking glue after being cured, the light-transmitting glue is manufactured, a layer of decorative light-blocking resin ink is manufactured or a layer of decorative light-blocking resin ink is adhered to the surfaces of the light-blocking glue, the decorative light-blocking resin ink is cut into the single light bar, the light bar is manufactured, and one-blocking glue is characterized in that the light-blocking glue penetrates through the light-transmitting glue and then is electrified.
2. A single-sided light blocking LED light bar, comprising:
a circuit board;
an LED or an LED and a control element;
a light-transmitting adhesive;
light-blocking glue;
the LED lamp is characterized in that the LED or the LED and the control element are welded on the circuit board, the light-transmitting glue is adhered on the circuit board and the LED, the light-transmitting glue is exposed at one side face of the lamp strip or exposed at the side face and the front face of the lamp strip, the light-blocking glue is adhered on the circuit board and the light-transmitting glue, the light-blocking glue is exposed at the side face of the other side of the lamp strip and the front face of the lamp strip, the light-blocking glue blocks light emitted by the LED towards one side face and blocks part of or all of light emitted by the front face, and after the lamp strip is electrified, light emitted by the LED penetrates through the light-transmitting glue and is emitted outwards from the surface of the light-transmitting glue exposed by the lamp strip.
3. A single-sided light-blocking LED light bar, comprising:
a circuit board;
LED or LED and control element;
a light-transmitting adhesive;
light-blocking glue;
decorative light-shielding resin ink or decorative light-shielding film;
the LED lamp is characterized in that the LED or the LED and the control element are welded on the circuit board, the light-transmitting glue is adhered to the circuit board and the LED, the light-transmitting glue is exposed on one side face of the lamp strip or exposed on the side face and the front face of the lamp strip, the light-blocking glue is adhered to the circuit board and the light-transmitting glue, the light-blocking glue is exposed on the other side face of the lamp strip, the light-blocking glue blocks light emitted by the LED towards one side face, the decorative light-blocking resin ink or the decorative light-blocking film is adhered to the light-blocking glue or adhered to the light-transmitting glue or adhered to the light-blocking glue and the light-transmitting glue, and after the lamp strip is electrified, light emitted by the LED penetrates through the light-transmitting glue and is emitted outwards from the surface of the light-transmitting glue exposed out of the lamp strip.
4. The single-sided light blocking LED light bar of claim 1, 2 or 3, wherein the circuit board is a rigid circuit board or a flexible circuit board.
5. The single-side light-blocking LED lamp strip according to claim 1 or 2, wherein one side face in the longitudinal direction of the lamp strip, the side face of the light-transmitting adhesive and the side face of the circuit board are on the same cutting face, and the other side face in the longitudinal direction of the lamp strip, the side face of the light-blocking adhesive and the side face of the circuit board are on one cutting face.
6. The single-sided light-blocking LED light bar according to claim 1 or 3, wherein one side surface in the longitudinal direction of the light bar, the side surface of the light-transmitting adhesive and the side surface of the circuit board are on the same cutting surface, the other side surface in the longitudinal direction of the light bar, the side surface of the light-blocking adhesive and the side surface of the circuit board, and the side surface of the decorative light-blocking resin ink or the decorative light-blocking film are on the same cutting surface.
7. The single-sided light-blocking LED light bar according to claim 1 or 3, wherein the side face of the light-transmitting adhesive, the side face of the circuit board and the side face of the decorative light-blocking resin ink or the decorative light-blocking film are on one cutting face, and the other side face of the light bar in the longitudinal direction of the light bar is on one cutting face.
8. The single-sided light-blocking LED light bar according to claim 1 or 3, wherein the decorative light-blocking film is an organic material thin film, a metal film, or a composite film of metal and organic material.
9. The single-sided light-blocking LED light bar according to claim 1 or 3, wherein the decorative light-blocking film is a film of fiber mixed resin glue, or a film made of leather, or a film made of paper.
10. The single-sided light-blocking LED light bar of claim 1 or 3, wherein the decorative light-blocking film and the light-blocking film are adhered together by an adhesive.
11. The single-sided light-blocking LED light bar according to claim 1, 2 or 3, wherein the light-transmissive glue is two layers of glue, one of which is a glue with phosphor.
12. The single-side light-blocking LED light bar according to claim 1, 2 or 3, wherein the LED is an LED bead or an LED flip chip.
CN202110073400.5A 2021-04-18 2021-04-18 LED light bar with single-side light blocking function and manufacturing method thereof Pending CN115234862A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110073400.5A CN115234862A (en) 2021-04-18 2021-04-18 LED light bar with single-side light blocking function and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110073400.5A CN115234862A (en) 2021-04-18 2021-04-18 LED light bar with single-side light blocking function and manufacturing method thereof

Publications (1)

Publication Number Publication Date
CN115234862A true CN115234862A (en) 2022-10-25

Family

ID=83666204

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110073400.5A Pending CN115234862A (en) 2021-04-18 2021-04-18 LED light bar with single-side light blocking function and manufacturing method thereof

Country Status (1)

Country Link
CN (1) CN115234862A (en)

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Application publication date: 20221025