CN209746319U - Direct type LED backlight module with uniform backlight - Google Patents
Direct type LED backlight module with uniform backlight Download PDFInfo
- Publication number
- CN209746319U CN209746319U CN201920542257.8U CN201920542257U CN209746319U CN 209746319 U CN209746319 U CN 209746319U CN 201920542257 U CN201920542257 U CN 201920542257U CN 209746319 U CN209746319 U CN 209746319U
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- led lamp
- backlight
- direct type
- type led
- backlight module
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Abstract
The utility model relates to the technical field of televisions, in particular to a direct type LED backlight module with uniform backlight; the LED lamp comprises a backlight assembly, polyester film reflecting paper and a plurality of matrix LED lamp strips, wherein each matrix LED lamp strip comprises a printed circuit board, mounting pieces and LED lamp beads, the mounting pieces are arranged on the surface of the printed circuit board at equal intervals, each mounting piece is provided with three oval LED lamp beads, and the central axes of the adjacent LED lamp beads form an included angle of 120 degrees; the form that will in the past single LED lamp pearl is luminous unit is changed into and is regarded as luminous unit with single installation piece, every luminous unit contains the oval LED lamp pearl of three inseparable combination one-tenth 120 degrees contained angles between adjacent, the light of each lamp pearl interweaves and mends the position mutually, go out the more even divergence of light, improve the degree of consistency of light from the source, so can reduce the quantity of LED lamp strip, can also reduce the bulk density of LED lamp pearl on the LED lamp strip, do benefit to the heat dissipation, thereby improve life.
Description
Technical Field
The utility model belongs to the technical field of the TV set technique and specifically relates to a straight following formula LED backlight unit even is shaded.
Background
The direct type liquid crystal module backlight source comprises a backboard, an LED lamp, a light-homogenizing and light-focusing functional membrane and other structural components and optical components. In order to enable the light of the LED lamp to be scattered more uniformly, the number of the LED lamp strips is increased, the number of the LED lamp beads on each lamp strip is increased, and auxiliary means such as a diffuse reflection lens are arranged on the LED lamp beads.
Publicly known, LED lamp strip sets up in comparatively inclosed backplate, and the heat dissipation of itself is exactly the old and difficult problem, has increased lamp strip quantity, lamp pearl quantity now, and has increased the mechanism that lens etc. can block its heat and give off for the lamp pearl, leads to product life not long.
Disclosure of Invention
Not enough to prior art, the utility model provides a straight following formula LED backlight unit even in a poor light, it has long service life's characteristics.
The technical scheme of the utility model is that:
A direct type LED backlight module with uniform backlight comprises a backlight assembly, polyester film reflecting paper and a plurality of matrix LED lamp strips, wherein the polyester film reflecting paper is correspondingly covered on the backlight assembly in a matching manner, and all the matrix LED lamp strips are uniformly connected between the backlight assembly and the polyester film reflecting paper at intervals; the method is characterized in that: matrix LED lamp strip includes printed circuit board, installation piece and LED lamp pearl, printed circuit board surface equidistance is provided with the installation piece, is provided with three oval LED lamp pearl on every installation piece, and its axis becomes 120 degrees contained angles each other between the adjacent LED lamp pearl.
Specifically, the backlight assembly comprises a back plate and a frame externally wound on the periphery of the back plate.
Specifically, square through holes are formed in the positions, located between the LED lamp beads, of the mounting pieces, and the printed circuit board is provided with protrusions matched with the square through holes, so that the mounting pieces can be accurately mounted at the specified positions when workers assemble the LED lamp.
Specifically, the periphery of the mounting piece is bonded with three hot melt adhesive blocks, and the bottom surfaces of the hot melt adhesive blocks are bonded with the surface of the printed circuit board. The function of fixing the mounting piece is achieved.
Specifically, the printed circuit board comprises a conductive layer and an insulating layer attached above the conductive layer, wherein circular notches are formed in positions, corresponding to two sides of each mounting piece, of the insulating layer, so that the conductive layer is exposed at the positions and becomes a port for electric connection of the LED lamp beads.
specifically, positive and negative marks are arranged at positions, corresponding to the circular notches, on the upper surface of the insulating layer, so that the positions can be accurately marked to be connected with the positive electrode or the negative electrode of the LED lamp bead.
Specifically, the positions, corresponding to the mounting pieces, on the upper surface of the insulating layer are coated with printing layers for printing serial numbers of the mounting pieces.
Specifically, the polyester film reflecting paper is provided with through holes corresponding to the mounting pieces, so that light rays generated on the mounting pieces can be emitted conveniently.
Specifically, the matrix LED lamp strip is connected to the backlight assembly in a heat conducting adhesive pasting mode.
Specifically, the mounting piece is a heat-conducting plastic sheet.
before use, the anode of the LED lamp bead should be connected to the conductive layer marked with the circular notch of the anode stamp, and the cathode should be connected to the conductive layer marked with the circular notch of the cathode stamp.
The utility model has the advantages that: the form that will in the past single LED lamp pearl is luminous unit is changed into and is regarded as luminous unit with single installation piece, every luminous unit contains the oval LED lamp pearl of three inseparable combination one-tenth 120 degrees contained angles between adjacent, be similar to the shadowless effect of operating lamp, the light of each lamp pearl interweaves the benefit position each other, go out the more even divergence of light, improve the degree of consistency of light from the source, then can reduce the quantity of LED lamp strip, can also reduce the overall density (local density of LED lamp pearl has improved) on the LED lamp strip, do benefit to the heat dissipation, thereby improve life.
Drawings
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view (top view) at A in FIG. 1;
Fig. 3 is a side view of fig. 2.
In the drawing, 1, a backlight assembly; 2. a matrix LED light bar; 3. polyester film reflective paper; 11. a back plate; 12. a frame; 21. a printed circuit board; 22. mounting a sheet; 23. a protrusion; 24. a hot melt adhesive block; 25. LED lamp beads; 26. a circular notch; 27. printing layer; 211. an insulating layer; 212. and a conductive layer.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
As shown in fig. 1-3, a direct type LED backlight module with uniform backlight comprises a backlight assembly 1, a polyester film reflective paper 3 and a plurality of matrix LED light bars 2, wherein the polyester film reflective paper 3 is correspondingly covered on the backlight assembly 1 in a matching manner, and all the matrix LED light bars 2 are uniformly connected between the backlight assembly 1 and the polyester film reflective paper 3 at intervals; the method is characterized in that: matrix LED lamp strip 2 includes printed circuit board 21, installation piece 22 and LED lamp pearl 25, printed circuit board 21 surface equidistance is provided with installation piece 22, is provided with three oval LED lamp pearl 25 on every installation piece 22, and its axis becomes 120 degrees contained angles each other between the adjacent LED lamp pearl 25.
The backlight assembly 1 includes a back plate 11 and a bezel 12 surrounding the outer periphery of the back plate 11.
The mounting plate 22 is provided with square through holes at positions between the LED lamp beads 25, the printed circuit board 22 is provided with protrusions 23 in cooperation with the square through holes, and the mounting plates 22 are accurately mounted at designated positions when workers assemble the LED lamp.
Three hot melt adhesive blocks 24 are adhered to the periphery of the mounting piece 22, and the bottom surfaces of the hot melt adhesive blocks 24 are adhered to the surface of the printed circuit board 21. Serving to secure the mounting tab 22.
The printed circuit board 21 includes a conductive layer 212 and an insulating layer 211 attached above the conductive layer 212, wherein the insulating layer 211 has circular notches 26 at positions corresponding to two sides of each mounting plate 22, so that the conductive layer 212 is exposed at the positions to serve as ports for electrical connection of the LED lamp beads 25.
Positive and negative marks are arranged on the upper surface of the insulating layer 211 corresponding to the circular notches 26, so that the position can be accurately marked to be connected with the positive electrode or the negative electrode of the LED lamp bead 25.
The upper surface of the insulating layer 211 is coated with a printing layer 27 at a position corresponding to one side of each mounting piece 22 for printing the serial number of the mounting piece 22.
The polyester film reflection paper 3 is provided with through holes corresponding to the mounting pieces 22 so that light generated on the mounting pieces 22 can be emitted.
The matrix LED lamp strip 2 is connected to the backlight assembly 1 in a heat conducting glue pasting mode.
The mounting plate 22 is a heat conductive plastic plate, specifically, an infrared PCC92(121R) -1073 provided by shenzhen mindfleyde science and technology ltd, which is a high heat conductive plastic and has two functions of insulation and heat conduction.
Before use, the anode of the LED lamp bead should be connected to the conductive layer marked with the circular notch of the anode stamp, and the cathode should be connected to the conductive layer marked with the circular notch of the cathode stamp.
The foregoing embodiments and description have been provided to illustrate the principles and preferred embodiments of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed.
Claims (10)
1. A direct type LED backlight module with uniform backlight comprises a backlight assembly, polyester film reflecting paper and a plurality of matrix LED lamp strips, wherein the polyester film reflecting paper is correspondingly covered on the backlight assembly in a matching manner, and all the matrix LED lamp strips are uniformly connected between the backlight assembly and the polyester film reflecting paper at intervals; the method is characterized in that: matrix LED lamp strip includes printed circuit board, installation piece and LED lamp pearl, printed circuit board surface equidistance is provided with the installation piece, is provided with three oval LED lamp pearl on every installation piece, and its axis becomes 120 degrees contained angles each other between the adjacent LED lamp pearl.
2. the direct type LED backlight module with uniform backlight as claimed in claim 1, wherein: the backlight assembly includes a back plate and a bezel surrounding a periphery of the back plate.
3. The direct type LED backlight module with uniform backlight as claimed in claim 2, wherein: and the mounting plate is provided with square through holes at positions between the LED lamp beads, and the printed circuit board is provided with bulges in cooperation with the square through holes.
4. The direct type LED backlight module with uniform backlight as claimed in claim 3, wherein: the periphery of the mounting piece is bonded with three hot melt adhesive blocks, and the bottom surfaces of the hot melt adhesive blocks are bonded with the surface of the printed circuit board.
5. The direct type LED backlight module with uniform backlight as claimed in claim 4, wherein: the printed circuit board comprises a conductive layer and an insulating layer attached above the conductive layer, wherein circular notches are formed in the positions, corresponding to the two sides of each mounting piece, of the insulating layer.
6. The direct type LED backlight module with uniform backlight as claimed in claim 5, wherein: and positive and negative marks are arranged on the upper surface of the insulating layer corresponding to the positions of the circular notches.
7. The direct type LED backlight module with uniform backlight as claimed in claim 6, wherein: and the upper surface of the insulating layer is coated with a printing layer at a position corresponding to one side of each mounting sheet.
8. The direct type LED backlight module with uniform backlight as claimed in claim 7, wherein: the polyester film reflecting paper is provided with through holes corresponding to the installation sheets.
9. The direct type LED backlight module with uniform backlight as claimed in claim 8, wherein: the matrix LED lamp strip is connected to the backlight assembly in a heat conducting glue pasting mode.
10. The direct type LED backlight module with uniform backlight as claimed in claim 9, wherein: the mounting piece is a heat-conducting plastic sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920542257.8U CN209746319U (en) | 2019-04-21 | 2019-04-21 | Direct type LED backlight module with uniform backlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920542257.8U CN209746319U (en) | 2019-04-21 | 2019-04-21 | Direct type LED backlight module with uniform backlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209746319U true CN209746319U (en) | 2019-12-06 |
Family
ID=68721383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920542257.8U Expired - Fee Related CN209746319U (en) | 2019-04-21 | 2019-04-21 | Direct type LED backlight module with uniform backlight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209746319U (en) |
-
2019
- 2019-04-21 CN CN201920542257.8U patent/CN209746319U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191206 Termination date: 20200421 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |