CN107327733A - A kind of side entrance back LED light bar and display - Google Patents

A kind of side entrance back LED light bar and display Download PDF

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Publication number
CN107327733A
CN107327733A CN201710607460.4A CN201710607460A CN107327733A CN 107327733 A CN107327733 A CN 107327733A CN 201710607460 A CN201710607460 A CN 201710607460A CN 107327733 A CN107327733 A CN 107327733A
Authority
CN
China
Prior art keywords
led light
led
emitting
upper pcb
pcb board
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
CN201710607460.4A
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Chinese (zh)
Inventor
郑净远
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to CN201710607460.4A priority Critical patent/CN107327733A/en
Publication of CN107327733A publication Critical patent/CN107327733A/en
Pending legal-status Critical Current

Links

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
    • 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
    • F21V19/0015—Fastening arrangements intended to retain light sources
    • F21V19/002—Fastening arrangements intended to retain light sources the fastening means engaging the encapsulation or the packaging of the semiconductor device
    • 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
    • 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)
  • Microelectronics & Electronic Packaging (AREA)
  • Led Device Packages (AREA)

Abstract

The present invention provides a kind of side entrance back LED light bar, including upper strata pcb board and lower floor's pcb board for being fitted with upper strata pcb board；Wherein, upper strata pcb board is provided with multiple LED luminescence components and extends through upper strata pcb board and the multiple grooves for the distribution that is staggered are formed between multiple LED luminescence components；Wherein, LED luminescence components include two lead foots that a LED package and its both sides are connected respectively；The diameter of groove should be less than the total length of the LED luminescence components；The internal multiple grooves for being equipped with a corresponding LED luminescence component are formed with lower floor's pcb board；Wherein, the interior LED package set contained by LED luminescence components is respectively located on the pcb board of upper strata below a corresponding groove in each groove, and light can penetrate each self-corresponding groove when being driven to emit light.Implement the present invention, LED package can be effectively increased and put quantity to increase the light-emitting area of unit length.

Description

Side income formula LED lamp strip and display in a poor light
Technical Field
The invention relates to the technical field of LEDs, in particular to a side-in type backlight LED lamp bar and a display.
Background
As shown in fig. 1, the LED arrangement of the LED light bar of the side-in backlight currently used is formed by an LED package 1/And a guide pin 2/Is determined by the size of the component (a). Assuming that the length of the light bar M is L, LED packaging body 1 without considering the precision of the piece-making/Length L1 and single-side lead 2/The length of the light bar M is L2, so that the light bar M can place the most LEDs N = L/(L1 + 2L 2), and the value of N can be unconditionally cut to a single digit. Therefore, if the number of the leads 2 can be reduced/The length of L2 allows a larger number of LED packages 1 to be placed under the same length of light bar/To increase the light emitting area per unit length.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a side-in type backlight LED light bar and a display, which can effectively increase the number of LED packages to increase the light emitting area per unit length.
In order to solve the technical problem, an embodiment of the invention provides a side-in type backlight LED light bar, which comprises an upper PCB and a lower PCB attached to the upper PCB; wherein,
the upper PCB is provided with a plurality of LED light-emitting components and a plurality of hollow grooves which respectively penetrate through the upper PCB and are distributed with the LED light-emitting components in a staggered manner; the LED light-emitting component comprises an LED packaging body and two guide pins which are correspondingly connected with the two sides of the LED packaging body respectively; the diameter of an opening of the hollow groove along the axial direction of the upper PCB is smaller than the total length of the LED light-emitting component;
a plurality of grooves with corresponding LED light-emitting components arranged inside are formed on the lower PCB; and the LED packaging bodies contained in the LED light-emitting assemblies arranged in the grooves are respectively positioned below the corresponding hollow grooves on the upper PCB, and light can penetrate through the corresponding hollow grooves when the LED packaging bodies are driven to emit light.
And the diameter of an opening of each hollow groove along the axial direction of the upper PCB is equal to the length of an LED packaging body contained in the LED light-emitting component.
The center of the LED packaging body contained in the LED light-emitting assembly arranged in each groove and the center of the corresponding hollow groove are located on the same axis, and the ratio of the horizontal length of the outer edge of the LED light-emitting surface of the contained LED packaging body, which is horizontally far away from the inner wall of the corresponding hollow groove, to the vertical length of the top end of the corresponding hollow groove, which is vertically far away from the inner wall of the corresponding hollow groove, is larger than a preset threshold value.
Wherein the preset threshold is 0.5.
The depth of each groove is equal to the height of the LED packaging body contained in the corresponding built-in LED light-emitting component.
The upper PCB board and the lower PCB board are attached together through one of double-sided adhesive tape, adhesive tape with double-sided adhesive property and glue with double-sided adhesive property.
The embodiment of the invention also provides a display which comprises the lateral type backlight LED lamp strip.
The embodiment of the invention has the following beneficial effects:
1. in the embodiment of the invention, the upper PCB is provided with the plurality of LED light-emitting assemblies and the hollow grooves which are distributed in a staggered manner, each hollow groove corresponds to one LED light-emitting assembly arranged in the groove of the lower PCB, and the opening diameter of each hollow groove along the axial direction of the upper PCB is smaller than the total length of the LED light-emitting assemblies, so that the arrangement number of the LED light-emitting assemblies is increased under the condition that the total length of the LED light bar is not changed, and the aim of effectively increasing the arrangement number of the LED packaging bodies to increase the light-emitting area of unit length is achieved;
2. in the embodiment of the invention, because the depth of each groove on the lower PCB is equal to the height of the LED packaging body, and the ratio of the horizontal length of the outer edge of the LED light emitting surface of the LED packaging body, which is transversely far away from the inner wall of the hollow groove, to the vertical length of the outer edge of the LED light emitting surface of the LED packaging body, which is longitudinally far away from the top end of the hollow groove (namely the thickness of the upper PCB) is greater than a preset threshold value, the light emitting intensity of the LED packaging body arranged in the lower PCB is optimal, the maximum brightness of the whole LED light bar is improved, and the.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive exercise.
FIG. 1 is a schematic diagram of a prior art LED light bar;
fig. 2 is a cross-sectional side view of a side-in type backlight LED light bar according to a first embodiment of the present invention;
FIG. 3 is a top plan view of FIG. 2;
fig. 4 is an application scene diagram of a side-entry backlight LED light bar according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 2 and fig. 3, in a first embodiment of the present invention, a side-in type backlight LED light bar includes an upper PCB board 1 and a lower PCB board 2 attached to the upper PCB board 1, for example, the upper PCB board and the lower PCB board are attached to each other by a double-sided adhesive tape or a double-sided adhesive glue; wherein,
the upper PCB board 1 is provided with a plurality of LED light-emitting components 3 and a plurality of hollow grooves 11 which respectively penetrate through the upper PCB board 1 and are distributed with the LED light-emitting components 3 in a staggered manner; the LED light emitting assembly 3 includes an LED package 31 and two leads 32 correspondingly connected to two sides of the LED package; the opening diameter of the hollow groove 11 along the axial direction of the upper PCB board 1 is smaller than the total length of the LED light-emitting component 3;
a plurality of grooves 21 with corresponding LED light-emitting components 3 arranged inside are formed on the lower PCB 2; the LED packages 31 contained in the LED light emitting assemblies 3 disposed in each of the grooves 21 are respectively located below a corresponding hollow slot 11 on the upper PCB 1, and light can penetrate through the corresponding hollow slot 11 when the LED packages are driven to emit light.
It can be understood that, each hollow groove 11 of the upper PCB 1 corresponds to one LED light emitting component 3 in the groove 21 of the lower PCB 2, and the diameter of the opening of each hollow groove 11 along the axial direction of the upper PCB 1 is smaller than the total length of the LED light emitting component 3, so that the number of the LED light emitting components 3 arranged on the upper PCB 1 is increased under the condition that the total length of the LED light bars (i.e. the total length of the upper PCB 1) is not changed, and the purpose of effectively increasing the number of the LED packages to increase the light emitting area per unit length is achieved.
In order to avoid the problem of lamp shadow caused by the fact that part of light of the LED light-emitting components 3 in the grooves 21 of the lower PCB 2 is transversely shielded as much as possible, the opening diameter of each hollow groove 11 along the axial direction of the upper PCB 1 is equal to the length of the LED packaging body 31 contained in the LED light-emitting components 3, so that the length of one guide pin 32 between every two LED light-emitting components 3 can be saved, and the maximum brightness of the whole LED lamp strip is improved.
In order to further improve the brightness of the whole LED light bar, the centers of the LED packages 31 contained in the LED light emitting assemblies 3 and the centers of the hollow grooves 11 respectively arranged in each of the grooves 21 are located on the same axis, and the ratio between the horizontal length w (shown in fig. 4) of the outer edge of the LED light emitting surface of the contained LED package 31, which is laterally distant from the inner wall of the hollow groove 11 respectively arranged in the corresponding direction, and the vertical length h (shown in fig. 4) of the longitudinal distance, which is longitudinally distant from the top end of the hollow groove 11 respectively arranged in the corresponding direction, is greater than a preset threshold; the preset threshold is 0.5.
In order to avoid the problem that the LED packaging body 31 is longitudinally shielded to generate light shadow when the LED packaging body 31 emits light due to the fact that the depth of the groove 11 of the lower PCB 2 is too deep, the depth of each groove 11 is equal to the height of the LED packaging body 31 contained in the corresponding LED light-emitting component 3, at the moment, the vertical length h of the outer edge of the LED light-emitting surface of the LED packaging body 31 contained in the graph 4 corresponding to the top end of the hollow groove 11 is the thickness of the upper PCB 1, the LED light-emitting surface of the LED packaging body 31 in the groove 11 of the lower PCB 2 is enabled to be located on the same plane as much as possible with the bottom surface of the upper PCB 1, and therefore the light-emitting intensity of the LED packaging body 31 arranged.
Corresponding to the side-in type backlight LED light bar in the first embodiment of the present invention, a second embodiment of the present invention provides a display, where the display includes a side-in type backlight LED light bar having the same structure and connection relationship as those in the first embodiment of the present invention.
The embodiment of the invention has the following beneficial effects:
1. in the embodiment of the invention, the upper PCB is provided with the plurality of LED light-emitting assemblies and the hollow grooves which are distributed in a staggered manner, each hollow groove corresponds to one LED light-emitting assembly arranged in the groove of the lower PCB, and the diameter of each hollow groove is smaller than the total length of the LED light-emitting assemblies, so that the arrangement number of the LED light-emitting assemblies is increased under the condition that the total length of the LED light bar is not changed, and the aim of effectively increasing the number of the LED packaging bodies to increase the light-emitting area of unit length is achieved;
2. in the embodiment of the invention, because the depth of each groove on the lower PCB is equal to the height of the LED packaging body, and the ratio of the horizontal length of the outer edge of the LED light emitting surface of the LED packaging body, which is transversely far away from the inner wall of the hollow groove, to the vertical length of the outer edge of the LED light emitting surface of the LED packaging body, which is longitudinally far away from the top end of the hollow groove (namely the thickness of the upper PCB) is greater than a preset threshold value, the light emitting intensity of the LED packaging body arranged in the lower PCB is optimal, the maximum brightness of the whole LED light bar is improved, and the.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (7)

1. A side-in type backlight LED lamp bar is characterized by comprising an upper PCB and a lower PCB attached to the upper PCB; wherein,
the upper PCB is provided with a plurality of LED light-emitting components and a plurality of hollow grooves which respectively penetrate through the upper PCB and are distributed with the LED light-emitting components in a staggered manner; the LED light-emitting component comprises an LED packaging body and two guide pins which are correspondingly connected with the two sides of the LED packaging body respectively; the diameter of an opening of the hollow groove along the axial direction of the upper PCB is smaller than the total length of the LED light-emitting component;
a plurality of grooves with corresponding LED light-emitting components arranged inside are formed on the lower PCB; and the LED packaging bodies contained in the LED light-emitting assemblies arranged in the grooves are respectively positioned below the corresponding hollow grooves on the upper PCB, and light can penetrate through the corresponding hollow grooves when the LED packaging bodies are driven to emit light.
2. The edge-type backlight LED light bar of claim 1, wherein the opening diameter of each hollow groove along the axial direction of the upper PCB is equal to the length of the LED package body contained in the LED light-emitting assembly.
3. The edge-type backlight LED light bar of claim 2, wherein the centers of the LED packages of the LED light-emitting components in each of the grooves and the centers of the corresponding hollow grooves are located on the same axis, and the ratio of the horizontal length of the outer edge of the LED light-emitting surface of each of the LED packages to the longitudinal length of the inner wall of the corresponding hollow groove to the vertical length of the top end of the corresponding hollow groove is greater than a predetermined threshold.
4. The side-in backlight LED light bar of claim 3, wherein the preset threshold is 0.5.
5. The edge-lit backlight LED light bar of claim 4, wherein the depth of each groove is equal to the height of the LED packages contained in the corresponding built-in LED light emitting devices.
6. The side-in type backlight LED light bar of claim 5, wherein the upper PCB board and the lower PCB board are attached together by one of double-sided adhesive tape, adhesive tape with double-sided adhesive property, and glue with double-sided adhesive property.
7. A display comprising the edge-lit backlight LED light bar of any one of claims 1-6.
CN201710607460.4A 2017-07-24 2017-07-24 A kind of side entrance back LED light bar and display Pending CN107327733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710607460.4A CN107327733A (en) 2017-07-24 2017-07-24 A kind of side entrance back LED light bar and display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710607460.4A CN107327733A (en) 2017-07-24 2017-07-24 A kind of side entrance back LED light bar and display

Publications (1)

Publication Number Publication Date
CN107327733A true CN107327733A (en) 2017-11-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710607460.4A Pending CN107327733A (en) 2017-07-24 2017-07-24 A kind of side entrance back LED light bar and display

Country Status (1)

Country Link
CN (1) CN107327733A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102865499A (en) * 2011-07-07 2013-01-09 群康科技(深圳)有限公司 Light emitting device, backlight module and display device
CN104949004A (en) * 2015-06-12 2015-09-30 武汉华星光电技术有限公司 Mobile phone backlight source
CN205842379U (en) * 2016-07-20 2016-12-28 广州创维平面显示科技有限公司 A kind of side entrance back module and display device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102865499A (en) * 2011-07-07 2013-01-09 群康科技(深圳)有限公司 Light emitting device, backlight module and display device
CN104949004A (en) * 2015-06-12 2015-09-30 武汉华星光电技术有限公司 Mobile phone backlight source
CN205842379U (en) * 2016-07-20 2016-12-28 广州创维平面显示科技有限公司 A kind of side entrance back module and display device

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Application publication date: 20171107

RJ01 Rejection of invention patent application after publication