CN209026542U - A kind of dual wavelength white LED lamp - Google Patents
A kind of dual wavelength white LED lamp Download PDFInfo
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- CN209026542U CN209026542U CN201821934059.8U CN201821934059U CN209026542U CN 209026542 U CN209026542 U CN 209026542U CN 201821934059 U CN201821934059 U CN 201821934059U CN 209026542 U CN209026542 U CN 209026542U
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Abstract
The utility model discloses a kind of dual wavelength white LED lamps, the dual wavelength white LED lamp includes power interface portion, LED light shell and lampshade, the power interface portion, LED light shell and lampshade are sequentially connected, substrate is provided in the LED light shell, die bond has several first LED chips and several second LED chips on the substrate, and first LED chip is different with the wavelength of the second LED chip.By the LED chip of several different wave lengths of die bond on substrate, smoothing spike keeps spectrum continuous, reduces stimulation of the spectrum spike to human eye.
Description
Technical field
The utility model relates to LED field, in particular to a kind of dual wavelength white LED lamp.
Background technique
One kind of the semiconductor diode of light emitting diode (Light Emitting Diode, LED) can turn electric energy
Turn to luminous energy.The operating voltage of LED is low, operating current is small, shock resistance and anti-seismic performance are good, high reliablity, service life are long, and passes through
It modulates the electric current power passed through modulate luminous power with can be convenient.Due to there is these features, light emitting diode has extensive
Application scenarios, such as most common lighting area and display field etc..
Conventional according to " the photo-biological safety of lamp and lamp system " (GB/T 20145-2006/CIE S009/E:2002)
White LED lamp belongs to flashlight, since Conventional white LED light is single pulse wavelength, and accordingly, there exist the discontinuous feelings of spectrum
Condition, and the energy of single pulse release is 10 times of mean radiation energies or more.It will form spike by the release of this high energy
Harm, and then human eye is caused to stimulate.
Thus the prior art could be improved and improve.
Utility model content
Place in view of above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of dual wavelength white light LEDs
Lamp, by the LED chip of several different wave lengths of die bond on substrate, smoothing spike keeps spectrum continuous, reduces spectrum spike pair
The stimulation of human eye.
In order to achieve the above object, the utility model takes following technical scheme:
A kind of dual wavelength white LED lamp, including power interface portion, LED light shell and lampshade, the power interface portion, LED light
Shell and lampshade are sequentially connected, and substrate is provided in the LED light shell, on the substrate die bond have several first LED chips and
The wavelength of several second LED chips, first LED chip and the second LED chip is different.
In the dual wavelength white LED lamp, the emission wavelength of first LED chip is 445nm-460nm.
In the dual wavelength white LED lamp, the emission wavelength of second LED chip is 460nm-470nm.
In the dual wavelength white LED lamp, the half-wave of the dual wavelength white LED lamp is wider than 220nm.
In the dual wavelength white LED lamp, it is additionally provided with the assisting base plate that is used for connecting with substrate in LED light shell and radiates
Radiator.
In the dual wavelength white LED lamp, thermally conductive layer of paste is also covered between the substrate and radiator.
In the dual wavelength white LED lamp, several described first LED chips and several second LED chips are successively
Series connection and oval array arrangement.
In the dual wavelength white LED lamp, box dam glue-line is additionally provided on the substrate, the box dam glue-line is rounded
It is centered around outside the oval LED chip array.
In the dual wavelength white LED lamp, be provided on the substrate positive terminal pad for connecting external power supply and
Negative terminal pad.
In the dual wavelength white LED lamp, the anchor point for positioning negative terminal pad is additionally provided on the substrate.
Compared to the prior art, dual wavelength white LED lamp provided by the utility model includes power interface portion, LED light shell
And lampshade, the power interface portion, LED light shell and lampshade are sequentially connected, and substrate, the substrate are provided in the LED light shell
Upper die bond has several first LED chips and several second LED chips, the wave of first LED chip and the second LED chip
It is long different.By the LED chip of several different wave lengths of die bond on substrate, smoothing spike keeps spectrum continuous, reduces spectrum point
Stimulation of the peak to human eye.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of dual wavelength white LED lamp provided by the utility model；
Fig. 2 is the sectional view of dual wavelength white LED lamp provided by the utility model；
Fig. 3 is the die bond structural schematic diagram of first embodiment provided by the utility model；
Fig. 4 is the die bond structural schematic diagram of second embodiment provided by the utility model.
Specific embodiment
The utility model provides a kind of dual wavelength white LED lamp, passes through several different wave lengths of die bond on substrate
LED chip, smoothing spike keeps spectrum continuous, reduces stimulation of the spectrum spike to human eye.
To keep the purpose of this utility model, technical solution and effect clearer, clear, develop simultaneously implementation referring to the drawings
The utility model is further described in example.It should be appreciated that specific embodiment described herein is only practical to explain
It is novel, it is not used to limit the utility model.
Fig. 1-Fig. 3 is please referred to, dual wavelength white LED lamp provided by the utility model includes power interface portion 10, LED light shell
20 and lampshade 30, the power interface portion 10, LED light shell 20 and lampshade 30 be sequentially connected, be provided with base in the LED light shell 20
Plate 40, die bond has several first LED chips 310 and several second LED chips 320, the first LED on the substrate 40
Chip 310 is different with the wavelength of the second LED chip 320.When it is implemented, by several first LED chips 310 and the 2nd LED
On the substrate 40, the wavelength of first LED chip 310 is 445nm-460nm, second LED chip to 320 die bond of chip
320 wavelength is 460nm-470nm, it is preferable that first LED chip 310 and the second LED chip 320 are that wavelength is different
Blue-light LED chip is provided with phosphor powder layer in first LED chip and the second LED chip, utilizes different colours specification
Fluorescent powder spectrum is adjusted, filled up the spectrum vacancy between single blue chip and conventional fluorescent spectrum, improved
Photochromic consistency and spectrum continuity, due to the wave band and sample diversified in specifications of the first LED chip 310 and the second LED chip 320,
Can improve because single blue chip half-wave it is wide it is too small caused by spectrum discontinuity, it is wide to increase half-wave, so that the dual wavelength is white
The half-wave of light LED light is wider than 220nm, so that LED lamp spectrum is continuous, inhibits instantaneous high energy to discharge, reduces spike
Harm, has achieved the effect that eyeshield, and the utility model structure is simple, easy to accomplish, can be widely applied to LED lamp bead encapsulation
Field.
Please continue to refer to Fig. 1 and Fig. 2, specifically, be provided in the LED light shell 20 connect with substrate 40 for auxiliary
The radiator 50 for helping substrate 40 to radiate, the radiator have biggish heat dissipation area, improve the inside heat transfer of LED lamp
Rate improves heat dissipation performance；It is also covered with thermally conductive layer of paste 60 between the substrate and radiator 50, improves substrate 40 and radiator
Pyroconductivity between 50 further improves the heat dissipation performance of LED lamp；20 inner wall of LED light shell is in slope surface shape, favorably
In the divergence of beam that the first LED chip 310 and the second LED chip 320 issue, illumination effect is improved；The LED light shell 20
If outer wall is provided with dry plate heat dissipation metal rib 100, several heat dissipation metal ribs 100 are spaced apart pre-determined distance, so that metal
Cooling fin 100 can be contacted sufficiently with air, improve heat dissipation effect；The lampshade 30 is for the LED core in protective substrate 40
Piece, prevents LED chip from making moist or by damage, and the lampshade 30 is white, is conducive to improve LED lamp brightness and light
Line diverging.
Referring to Fig. 3, in the first embodiment of the utility model, several described first LED chips 310 and several the
Two LED chips 320 be sequentially connected in series and oval array arrangement on the substrate 40, be provided on the substrate 40 for connecting
The positive terminal pad 401 and negative terminal pad 402 of external power supply.Preferably, 4 the first LED chips 310 is selected to be arranged in substrate anode
Side, 4 the first LED chips 310 of reselection are arranged in the negative side of substrate, and first LED chip 310 is in ellipse around row
Cloth；Finally, 5 the second LED chips 320 are vertically arranged among first LED chip 310 along ellipse long axis again, institute
State the first LED chip 310 and the series connection of the second LED chip 320.By first LED chip 310 and the second LED chip 320 at ellipse
Round series arrangement can make the wavelength of two kinds of LED chips sufficiently complementary on substrate, and then keep spectrum continuous, reach and smooth point
The effect of human eye is protected at peak.Specifically, box dam glue-line 70 is additionally provided on the substrate, the box dam glue-line 70 is rounded to be enclosed
It is wound on outside the oval LED chip array, improves the air-tightness of LED lamp, prevent LED light source dampness short circuit.The base
It is additionally provided with the anchor point 80 for positioning negative terminal pad on plate, a notch, the notch are additionally provided on the box dam glue-line
Positioned at negative electrode side, an anchor point 80 for resolution positive and negative anodes in production is set on the notch, improves life
Efficiency is produced, is conducive to be mass produced.
Referring to Fig. 4, being provided with several LED light in the LED light shell 20 in the second embodiment of the utility model
Pearl, the LED lamp bead include plastic stent 90 and metal pad (showing in figure), and the plastic stent 90 is set to metal welding
A bowl (not shown) is surrounded on disk, the metal pad exposes from the bottom of the bowl, is formed for welding difference
The first pad 910, the second pad 920, third pad 930 and the 4th pad 940 of color LED chip, first pad 910
There is the first LED chip 310 with die bond on the second pad 920, die bond has second on the third pad 930 and the 4th pad 940
LED chip 320, first pad 910 and third pad 930 are positive terminal pad, second pad 920 and the 4th pad
940 be negative terminal pad.
The present embodiment by die bond the first LED chip 310 on the metal pad of LED lamp bead and the second LED chip 320,
So that LED lamp bead issues the blue light of different-waveband, the half-wave for increasing blue light components is wide, keeps spectral wavelength continuous, reduces point
Peak harm has achieved the effect that protect human eye.First LED chip 310 and the second LED chip 320 are flip LED core
Piece, by direct die bond in reducing wire bonding process on metal pad；First LED chip 310 and the second LED chip 320
The fluorescent powder for being inside provided with different colours is adjusted wavelength of light, has filled up blue-light LED chip and conventional fluorescent spectrum
Between spectrum vacancy, improve photochromic consistency and spectrum continuity, realize eyeshield effect.In addition, the plastic stent 90
It is integrally formed, manufacture craft is simple, is convenient for large-scale industrial production.Further, in the bowl, 310 and of the first LED chip
The surrounding of second LED chip 320 is filled with white adhesive layer 200, and the white adhesive layer 200 is made of milky silica gel, has and be easy into
Type, the high feature of thixotropy have been effectively isolated the light that two different colors of LED chip issues using the white adhesive layer 200,
Reduce interacting after LED chip shines, ensure that photochromic consistency is good；The height of the milky silica gel 200 with
First LED chip 310 is consistent with the height of the second LED chip 320, prevents the white adhesive layer 200 from covering LED chip, keeps away
The light quality for exempting to influence chip, causes the photochromic consistency of LED light source poor, influences luminous efficiency；And in the first LED chip
310 and the filling of 320 surrounding of the second LED chip and the first LED chip 310 and the contour white adhesive layer 200 of the second LED chip 320, by
There is high reflectivity, yellowing resistance, high leakproofness in the white glue, can effectively reflect the first LED chip 30 and the second LED core
The light that piece 31 emits around project light can only from front, play focusing light effect, improve the brightness of LED light source,
So that LED light source is more efficient.For the present embodiment by carrying out the wide adjustment of half-wave to each LED lamp bead, multiple LED lamp beads are same
Shi Faguang had both realized eyeshield effect, in turn ensured the brightness of LED lamp.
In conclusion dual wavelength white LED lamp provided by the utility model includes power interface portion, LED light shell and lampshade,
The power interface portion, LED light shell and lampshade are sequentially connected, and substrate are provided in the LED light shell, there is die bond on the substrate
The wavelength of several first LED chips and several second LED chips, first LED chip and the second LED chip is different.
By the LED chip of several different wave lengths of die bond on substrate, smoothing spike keeps spectrum continuous, reduces spike harm, protection
Human eye.
It is understood that for those of ordinary skills, can with technical solution according to the present utility model and
The design of its utility model is subject to equivalent substitution or change, and all these changes or replacement all should belong to appended by the utility model
Scope of protection of the claims.
Claims (10)
1. a kind of dual wavelength white LED lamp, which is characterized in that including power interface portion, LED light shell and lampshade, the power supply is connect
Oral area, LED light shell and lampshade are sequentially connected, and substrate is provided in the LED light shell, on the substrate die bond have several first
LED chip and several second LED chips are provided with phosphor powder layer in first LED chip and the second LED chip, institute
It is different with the wavelength of the second LED chip to state the first LED chip.
2. dual wavelength white LED lamp according to claim 1, which is characterized in that the emission wavelength of first LED chip
For 445nm-460nm.
3. dual wavelength white LED lamp according to claim 1, which is characterized in that the emission wavelength of second LED chip
For 460nm-470nm.
4. dual wavelength white LED lamp according to claim 1, which is characterized in that the half-wave of the dual wavelength white LED lamp
It is wider than 220nm.
5. dual wavelength white LED lamp according to claim 1, which is characterized in that be additionally provided in the LED light shell and base
The radiator for assisting base plate heat dissipation of plate connection.
6. dual wavelength white LED lamp according to claim 5, which is characterized in that also covered between the substrate and radiator
There is thermally conductive layer of paste.
7. dual wavelength white LED lamp according to claim 1, which is characterized in that if several described first LED chips and
Dry second LED chip is sequentially connected in series and oval array arrangement.
8. dual wavelength white LED lamp according to claim 7, which is characterized in that be additionally provided with box dam glue on the substrate
Layer, the box dam glue-line is rounded to be centered around outside oval LED chip array.
9. dual wavelength white LED lamp according to claim 1, which is characterized in that be provided on the substrate for connecting
The positive terminal pad and negative terminal pad of external power supply.
10. dual wavelength white LED lamp according to claim 9, which is characterized in that be additionally provided on the substrate for fixed
The anchor point of position negative terminal pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821934059.8U CN209026542U (en) | 2018-11-22 | 2018-11-22 | A kind of dual wavelength white LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821934059.8U CN209026542U (en) | 2018-11-22 | 2018-11-22 | A kind of dual wavelength white LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209026542U true CN209026542U (en) | 2019-06-25 |
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ID=66909915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821934059.8U Active CN209026542U (en) | 2018-11-22 | 2018-11-22 | A kind of dual wavelength white LED lamp |
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| Country | Link |
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| CN (1) | CN209026542U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115119355A (en) * | 2022-08-29 | 2022-09-27 | 南昌硅基半导体科技有限公司 | High-speed LED device with positioning and lighting functions and manufacturing method thereof |
-
2018
- 2018-11-22 CN CN201821934059.8U patent/CN209026542U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115119355A (en) * | 2022-08-29 | 2022-09-27 | 南昌硅基半导体科技有限公司 | High-speed LED device with positioning and lighting functions and manufacturing method thereof |
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