CN208365255U - A kind of straight-down negative lamp bar - Google Patents
A kind of straight-down negative lamp bar Download PDFInfo
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- CN208365255U CN208365255U CN201821113417.9U CN201821113417U CN208365255U CN 208365255 U CN208365255 U CN 208365255U CN 201821113417 U CN201821113417 U CN 201821113417U CN 208365255 U CN208365255 U CN 208365255U
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- lens
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- pcb circuit
- lamp bead
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Abstract
The utility model discloses a kind of straight-down negative lamp bar, including lens, reflective substrate, LED lamp bead, PCB circuit board, wiring pad；The upper surface of the PCB circuit board is provided with LED lamp bead, and reflective substrate is covered in the PCB circuit board on LED lamp bead periphery, and lens are provided on reflective substrate, and lens pass through the upper surface that reflective substrate is fixed on PCB circuit board；PCB circuit board upper surface one end is provided with wiring pad；The shape of the lens is cylinder, and the side of lens is provided with lens frame；The top surface of lens is buttferfly-type light-emitting surface, and lens lower surface is provided with taper incidence surface, and taper incidence surface is located at the axle center of lens；Lens lower surface is provided with lens supports column, and multiple lens supports columns are evenly distributed on taper incidence surface periphery.The utility model has the characteristics of promoting luminous flux, light efficiency, reducing production cost, promote production yield, reduce the lamp bar thickness, realize ultrathin backlight mould group.
Description
Technical field
The utility model relates to a kind of straight-down negative lamp bars, and especially a kind of to have promotion luminous flux, light efficiency, reduction is produced into
This, promotes production yield, reduces the lamp bar thickness, realizes the straight-down negative lamp bar of ultrathin backlight mould group.
Background technique
In TV display backlight industry, lamp bar width is usually bigger than the diameter of lens, can just LED lamp bead be made to issue in this way
Light by lens reflect and PCB circuit board reflection, launch to greatest extent.And in order to increase reflecting rate, PCB
Circuit board upper surface will coat one layer of white oil, to increase the reflectivity of light.Since the dosage of PCB circuit board increases, cause into
Originally it can not reduce；In addition, the white oil of PCB circuit board upper surface coating is held due to factors such as the technique of each raw manufacturer and technologies
It is also easy to produce batch difference, generates xanthochromia when crossing reflow ovens, first is that presentation quality is influenced, second is that the reflectivity of light is influenced,
And then lamp bar luminous flux is caused to decline, there is quality of lot problem.
The utility model increases the reflectivity of light by a piece of reflective substrate bigger than lens diameter in side under a lens, together
When, reduce pcb board width requirement.And then cost is greatly reduced, improve the cost advantage of product.
Utility model content
Have the purpose of this utility model is to provide one kind and promote luminous flux, light efficiency, reduce production cost, promotes production
Yield reduces the lamp bar thickness, realizes the straight-down negative lamp bar of ultrathin backlight mould group.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of straight-down negative lamp bar, including lens, reflective substrate, LED lamp bead, PCB circuit board, wiring pad；
The upper surface of the PCB circuit board is provided with LED lamp bead, is covered in the PCB circuit board on LED lamp bead periphery reflective
Substrate, lens are provided on reflective substrate, and lens pass through the upper surface that reflective substrate is fixed on PCB circuit board；The PCB circuit
Plate upper surface one end is provided with wiring pad；
The shape of the lens is cylinder, and the side of lens is provided with lens frame；The top surface of lens goes out for buttferfly-type
Smooth surface, lens lower surface are provided with taper incidence surface, and taper incidence surface is located at the axle center of lens；Lens lower surface is provided with
Mirror support column, multiple lens supports columns are evenly distributed on taper incidence surface periphery；
The shape of the reflective substrate is circle, and reflective substrate includes substrate, support column through-hole, and upper surface of base plate is provided with
Reflecting coating, upper surface of base plate reflect the light that LED lamp bead issues；It is provided with support column through-hole on substrate, support column through-hole and thoroughly
The cooperation of mirror support column；Lens supports column passes through support column through-hole, is fixed on the upper surface of PCB circuit board；The shape of the substrate
For one of rectangular, round, triangle；
The lens are fixed in PCB circuit board by solidified glue, and solidified glue material is epoxy resin structural adhesive, purple
One of outer optic-solidified adhesive；；Lens are one of reflective lens, refraction type lens；
The LED lamp bead includes bracket, LED chip, and rack upper surface is provided with die bond groove, die bond groove lower surface
Interior pad is provided on bracket, bracket lower surface is provided with outer pad, and outer pad and interior pad are conductively connected；Outer pad and PCB
The board pads cooperation being arranged on circuit board, LED lamp bead are welded in PCB circuit board by outer pad, board pads；
LED chip is by being mounted on the bracket of die bond groove lower surface；
Mouth-shaped is circle on the die bond groove；
Lamp bead circuit is provided in the PCB circuit board, lamp bead circuit on one side is connected to wiring pad, and lamp bead circuit is another
End is by being connected in series or in parallel in board pads；The PCB circuit board upper surface on board pads periphery is provided with support
Column groove, support column groove and lens supports column cooperate；The material of the PCB circuit board is one of glass-fiber-plate, aluminum substrate.
The LED lamp bead is equally arranged along PCB circuit board.
The utility model provides a kind of straight-down negative lamp bar, has and promotes luminous flux, light efficiency, reduces production cost, is promoted
The characteristics of production yield reduces the lamp bar thickness, realizes ultrathin backlight mould group.
Detailed description of the invention
In order to facilitate the understanding of those skilled in the art, the utility model will be further described below with reference to the accompanying drawings.
Fig. 1 is a kind of structural schematic diagram of straight-down negative lamp bar of the utility model；
Fig. 2 is a kind of sectional view of straight-down negative lamp bar of the utility model；
Fig. 3 is a kind of lens-section figure of straight-down negative lamp bar of the utility model；
Fig. 4 is a kind of reflective substrate top view of straight-down negative lamp bar of the utility model.
Specific embodiment
The purpose of this utility model can be achieved through the following technical solutions:
A kind of straight-down negative lamp bar, referring to Fig. 1-4, including lens 1, reflective substrate 2, LED lamp bead 3, PCB circuit board 4, wiring
Pad 5；
The upper surface of the PCB circuit board 4 is provided with LED lamp bead 3, is covered in the PCB circuit board 4 on 3 periphery of LED lamp bead
Reflective substrate 2, lens 1 are provided on reflective substrate 2, and lens 1 pass through the upper surface that reflective substrate 2 is fixed on PCB circuit board 4；
Described 4 upper surface one end of PCB circuit board is provided with wiring pad 5, and wiring pad 5 is wired on power supply, and power supply is logical
Conducting wire, wiring pad 5 are crossed to the LED lamp bead power supply in PCB circuit board 4；
The shape of the lens 1 is cylinder, and the side of lens 1 is provided with lens frame 11；The top surface of lens 1 is butterfly
Type light-emitting surface 12,1 lower surface of lens are provided with taper incidence surface 13, and taper incidence surface 13 is located at the axle center of lens 1；Lens 1
Lower surface is provided with lens supports column 14, and multiple lens supports columns 14 are evenly distributed on 13 periphery of taper incidence surface；
The shape of the reflective substrate 2 is circle, and reflective substrate 2 includes substrate 21, support column through-hole 22, table on substrate 21
Face is provided with reflecting coating, and the light that LED lamp bead 3 issues is reflected in 21 upper surface of substrate；Support column through-hole 22 is provided on substrate 21,
Support column through-hole 22 and lens supports column 14 cooperate；Lens supports column 14 passes through support column through-hole 22, is fixed on PCB circuit board 4
Upper surface；The shape of the substrate 21 is one of rectangular, round, triangle；
The lens 1 are fixed in PCB circuit board 4 by solidified glue, solidified glue material be epoxy resin structural adhesive,
One of ultraviolet cured adhesive；Lens 1 are one of reflective lens, refraction type lens；
The LED lamp bead 3 includes bracket, LED chip, and rack upper surface is provided with die bond groove, die bond groove lower surface
Bracket on be provided with interior pad, bracket lower surface is provided with outer pad, and outer pad and interior pad are conductively connected；Outer pad with
The board pads cooperation being arranged in PCB circuit board 4, LED lamp bead 3 are welded on PCB circuit board by outer pad, board pads
On 4；For LED chip by being mounted on the bracket of die bond groove lower surface, the P electrode of LED chip, N electrode pass through interior pad, outer
Pad, board pads are connected in PCB circuit board 4, and PCB circuit board 4 passes through electric current, the electricity of power driving control LED chip
Pressure；
Mouth-shaped is circle on the die bond groove；
Lamp bead circuit is provided in the PCB circuit board 4, lamp bead circuit on one side is connected to wiring pad 5, and lamp bead circuit is another
One end is by being connected in series or in parallel in board pads；Power supply is supplied by wiring pad 5, lamp bead circuit to board pads
Electricity；4 upper surface of PCB circuit board on board pads periphery is provided with support column groove, support column groove and lens supports column 14
Cooperation, lens supports column 14 pass through support column through-hole 22 and are fixed in support column groove；The material of the PCB circuit board (4) is
One of glass-fiber-plate, aluminum substrate；
The LED lamp bead 3 is equally arranged along PCB circuit board 4.
Working principle of the utility model is:
Wiring pad 5 is wired on power supply, and power supply is by conducting wire, wiring pad 5 in PCB circuit board 4
LED lamp bead power supply；By being mounted on the bracket of die bond groove lower surface, P electrode, the N electrode of LED chip pass through LED chip
Interior pad, outer pad, board pads are connected in PCB circuit board 4, and PCB circuit board 4 passes through power driving control LED chip
Electric current, voltage；Power supply is powered by wiring pad 5, lamp bead circuit to board pads；Lens supports column 14 passes through support column
Through-hole 22 is fixed in support column groove；
LED lamp bead 3 passes through lens 1, the diffuser plate being irradiated in backlight module after being irradiated to the light reflection of reflective substrate 2
On, using the better reflectance coating of reflectivity, effectively promotes the luminous flux of the backlight module, light efficiency, promotes reflectivity；
Compared with the white oil reflecting layer of traditional PCB circuit board upper surface, 2 complete independently of reflective substrate of the utility model is reflective
Effect, can reduce 4 width of PCB circuit board, or even be made into ultra-narrow PCB circuit board 4；Ultra-narrow PCB circuit board 4 reduces PCB circuit
The production cost of plate 4 promotes production yield；
The utility model is provided with the support column groove cooperated with lens supports column 14 in PCB circuit board 4, and support column is recessed
Lens supports column 14 is installed in slot, by the setting of support column groove, the integral thickness of the lamp bar is effectively reduced, to reduce
The thickness of backlight module realizes ultrathin backlight mould group.
The utility model provides a kind of straight-down negative lamp bar, has and promotes luminous flux, light efficiency, reduces production cost, is promoted
The characteristics of production yield reduces the lamp bar thickness, realizes ultrathin backlight mould group.
The utility model is wired on power supply in wiring pad, and power supply gives PCB electricity by conducting wire, wiring pad
LED lamp bead power supply on the plate of road；LED chip is by being mounted on the bracket of die bond groove lower surface, the P electrode of LED chip, N
Electrode is connected in PCB circuit board by interior pad, outer pad, board pads, and PCB circuit board passes through power driving control
Electric current, the voltage of LED chip；Power supply is powered by wiring pad, lamp bead circuit to board pads；Lens supports column passes through branch
Dagger through-hole is fixed in support column groove；
LED lamp bead passes through lens after being irradiated to the light reflection of reflective substrate, is irradiated on the diffuser plate in backlight module,
Using the better reflectance coating of reflectivity, effectively promotes the luminous flux of the backlight module, light efficiency, promotes reflectivity；
Compared with the white oil reflecting layer of traditional PCB circuit board upper surface, the reflective substrate complete independently of the utility model is reflective
Effect, can reduce PCB circuit board width, or even be made into ultra-narrow PCB circuit board；Ultra-narrow PCB circuit board reduces PCB circuit board
Production cost promotes production yield；
The utility model is provided with the support column groove with the cooperation of lens supports column, support column groove in PCB circuit board
Lens supports column is inside installed, by the setting of support column groove, the integral thickness of the lamp bar is effectively reduced, to reduce backlight
The thickness of mould group realizes ultrathin backlight mould group.
Above content is only to the utility model structure example and explanation, the technology people of affiliated the art
Member makes various modifications or additions to the described embodiments or is substituted in a similar manner, without departing from reality
With novel structure or beyond the scope defined by this claim, all should belong to the protection range of the utility model.
Claims (8)
1. a kind of straight-down negative lamp bar, including lens (1), reflective substrate (2), LED lamp bead (3), PCB circuit board (4), wiring pad
(5), it is characterised in that:
The upper surface of the PCB circuit board (4) is provided with LED lamp bead (3), is covered in the PCB circuit board (4) on LED lamp bead (3) periphery
It is stamped reflective substrate (2), is provided on reflective substrate (2) lens (1), lens (1) pass through reflective substrate (2) and are fixed on PCB electricity
The upper surface of road plate (4)；Described PCB circuit board (4) upper surface one end is provided with wiring pad (5).
2. a kind of straight-down negative lamp bar according to claim 1, which is characterized in that the shape of the lens (1) is cylinder,
The side of lens (1) is provided with lens frame (11)；The top surface of lens (1) is buttferfly-type light-emitting surface (12), lens (1) lower surface
It is provided with taper incidence surface (13), taper incidence surface (13) is located at the axle center of lens (1)；Lens (1) lower surface is provided with
Mirror support column (14), multiple lens supports columns (14) are evenly distributed on taper incidence surface (13) periphery.
3. a kind of straight-down negative lamp bar according to claim 1, which is characterized in that the shape of the reflective substrate (2) is circle
Shape, reflective substrate (2) include substrate (21), support column through-hole (22), and substrate (21) upper surface is provided with reflecting coating, substrate
(21) light that upper surface reflection LED lamp bead (3) issues；Support column through-hole (22), support column through-hole are provided on substrate (21)
(22) cooperate with lens supports column (14)；Lens supports column (14) passes through support column through-hole (22), is fixed on PCB circuit board (4)
Upper surface；The shape of the substrate (21) is one of rectangular, round, triangle.
4. a kind of straight-down negative lamp bar according to claim 1, which is characterized in that the lens (1) are solid by solidified glue
It is scheduled on PCB circuit board (4), solidified glue material is one of epoxy resin structural adhesive, ultraviolet cured adhesive；Lens (1)
For one of reflective lens, refraction type lens.
5. a kind of straight-down negative lamp bar according to claim 1, which is characterized in that the LED lamp bead (3) includes bracket, LED
Chip, rack upper surface are provided with die bond groove, interior pad are provided on the bracket of die bond groove lower surface, and bracket lower surface is set
It is equipped with outer pad, outer pad and interior pad are conductively connected；The board pads being arranged on outer pad and PCB circuit board (4) cooperate,
LED lamp bead (3) is welded on PCB circuit board (4) by outer pad, board pads；LED chip is by being mounted on die bond groove
On the bracket of lower surface.
6. a kind of straight-down negative lamp bar according to claim 5, which is characterized in that mouth-shaped is circle on the die bond groove
Shape.
7. a kind of straight-down negative lamp bar according to claim 1, which is characterized in that be provided with lamp in the PCB circuit board (4)
Pearl circuit, lamp bead circuit on one side are connected to wiring pad (5), and the lamp bead circuit other end is by being connected in series or in parallel circuit board
On pad；PCB circuit board (4) upper surface on board pads periphery is provided with support column groove, support column groove and lens branch
Dagger (14) cooperation；The material of the PCB circuit board (4) is one of glass-fiber-plate, aluminum substrate.
8. a kind of straight-down negative lamp bar according to claim 1, which is characterized in that the LED lamp bead (3) is along PCB circuit board
(4) it equally arranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821113417.9U CN208365255U (en) | 2018-07-13 | 2018-07-13 | A kind of straight-down negative lamp bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821113417.9U CN208365255U (en) | 2018-07-13 | 2018-07-13 | A kind of straight-down negative lamp bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208365255U true CN208365255U (en) | 2019-01-11 |
Family
ID=64925332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821113417.9U Active CN208365255U (en) | 2018-07-13 | 2018-07-13 | A kind of straight-down negative lamp bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208365255U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108870155A (en) * | 2018-07-13 | 2018-11-23 | 安徽芯瑞达科技股份有限公司 | A kind of straight-down negative lamp bar |
| CN113366255A (en) * | 2019-01-24 | 2021-09-07 | 昕诺飞控股有限公司 | LED filament device |
-
2018
- 2018-07-13 CN CN201821113417.9U patent/CN208365255U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108870155A (en) * | 2018-07-13 | 2018-11-23 | 安徽芯瑞达科技股份有限公司 | A kind of straight-down negative lamp bar |
| CN113366255A (en) * | 2019-01-24 | 2021-09-07 | 昕诺飞控股有限公司 | LED filament device |
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