CN215496771U - Lighting device and white light LED lamp bead - Google Patents
Lighting device and white light LED lamp bead Download PDFInfo
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- CN215496771U CN215496771U CN202122296877.8U CN202122296877U CN215496771U CN 215496771 U CN215496771 U CN 215496771U CN 202122296877 U CN202122296877 U CN 202122296877U CN 215496771 U CN215496771 U CN 215496771U
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Abstract
The utility model relates to a lighting device and a white light LED lamp bead, the white light LED lamp bead comprises: the LED chip comprises a support, an LED chip, a first fluorescent adhesive layer and a second fluorescent adhesive layer. The support is provided with a light-emitting groove, and the light-emitting groove is provided with an anode bonding pad and a cathode bonding pad. The LED chip is arranged in the light-emitting groove and is electrically connected with the anode bonding pad and the cathode bonding pad respectively. The first fluorescent glue layer comprises a first transparent glue base layer and red fluorescent powder particles, and the second fluorescent glue layer comprises a second transparent glue base layer and green fluorescent powder particles. Through setting up first transparent adhesive tape base layer and second transparent adhesive tape base layer, can divide two-layer to arouse red phosphor powder granule and green phosphor powder granule respectively, avoid arousing efficiency and reduce, improve whole arouse efficiency, through extending the outside of protrusion to the light-emitting slot with the second face of second transparent adhesive tape base layer, can increase and go out the plain noodles to be favorable to improving luminance, obtain the white light LED lamp pearl that luminous efficiency is high and luminance is high.
Description
Technical Field
The utility model relates to the technical field of LED lamp beads, in particular to a lighting device and a white LED lamp bead.
Background
The LED (light emitting diode) white light bead is a device for lighting, can replace a white weaving lamp, has the advantages of small volume and high brightness, is a revolution of human lighting, is generally characterized in that an LED chip is fixed at the bottom of a support cup, the LED chip is conducted with the support through a gold wire or an alloy metal wire to realize electric communication, fluorescent powder with different wavelengths and packaging glue are uniformly mixed according to a certain proportion and then packaged, and the LED chip is packaged in the support cup to obtain the LED white light bead.
However, the existing LED white light bead has the problems of low brightness and low luminous efficiency of the bead, and cannot meet the higher and higher requirements of people, so that it is necessary to improve the brightness and luminous efficiency of the LED white light bead.
SUMMERY OF THE UTILITY MODEL
Therefore, there is a need for a lighting device and a white LED lamp bead.
The technical scheme for solving the technical problems is as follows: a white light LED lamp pearl includes:
the light-emitting device comprises a bracket, a light-emitting groove and a light-emitting component, wherein the bracket is provided with a positive bonding pad and a negative bonding pad;
the LED chip is arranged in the light-emitting groove and is electrically connected with the anode bonding pad and the cathode bonding pad respectively;
a first fluorescent glue layer; the first fluorescent glue layer comprises a first transparent glue base layer and red fluorescent powder particles, the first transparent glue base layer is arranged in the light-emitting groove, the first transparent glue base layer is coated on the outer side of the LED chip, and the red fluorescent powder particles are arranged in the first transparent glue base layer; and
the second fluorescent glue layer comprises a second transparent glue base layer and green fluorescent powder particles, the first face of the second transparent glue base layer is connected with the face, far away from the LED chip, of the first transparent glue base layer, the second face of the second transparent glue base layer extends to protrude to the outer side of the light emitting groove, and the green fluorescent powder particles are arranged in the second transparent glue base layer.
In one embodiment, the LED chip further includes a first metal line and a second metal line, two ends of the first metal line are electrically connected to the positive pad and the first end of the LED chip, respectively, and two ends of the second metal line are electrically connected to the negative pad and the second end of the LED chip, respectively.
In one embodiment, the thickness of the first transparent adhesive base layer is equal to the depth of the light emitting groove.
In one embodiment, the second face of the second transparent adhesive base layer is an arc-shaped face.
In one embodiment, the second surface of the second transparent adhesive base layer is a hemispherical surface.
In one embodiment, a plurality of protruding portions are arranged on one surface, away from the LED chip, of the first transparent adhesive base layer, and the protruding portions are distributed in a matrix shape around a central axis of the first transparent adhesive base layer.
In one embodiment, the cross-sectional area of each of the projections gradually decreases from an end near the first transparent adhesive base layer to an end far away from the first transparent adhesive base layer.
In one embodiment, the first transparent adhesive base layer is one of an epoxy adhesive base layer, a silicone adhesive base layer and a UV adhesive base layer.
In one embodiment, the second transparent adhesive base layer is one of an epoxy adhesive base layer, a silicone adhesive base layer and a UV adhesive base layer.
An illumination device, comprising: the white light LED lamp bead in any one of the above embodiments.
Compared with the prior art, the utility model has at least the following advantages:
the utility model arranges the first transparent adhesive tape base layer and the second transparent adhesive tape base layer which are overlapped in sequence, and the red fluorescent powder particles and the green fluorescent powder particles are respectively arranged in the first transparent adhesive tape base layer and the second transparent adhesive tape base layer, thus, can respectively excite the red phosphor particles and the green phosphor particles in two layers, can avoid mixing the red phosphor particles and the green phosphor particles, thereby avoiding the reduction of the excitation efficiency of the red fluorescent powder particles, improving the overall excitation efficiency of the white light LED lamp bead, reducing light loss, and simultaneously, by extending the second surface of the second transparent adhesive base layer to protrude to the outer side of the light-emitting groove, therefore, the second transparent adhesive tape base layer protrudes out of the support, the light emitting surface can be increased, the brightness of the white light LED lamp bead is improved, and the white light LED lamp bead with high light emitting efficiency and high brightness is obtained.
Drawings
Fig. 1 is a schematic structural diagram of a white light LED lamp bead according to an embodiment;
fig. 2 is a schematic view of a partial structure of a white LED lamp bead according to an embodiment.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments of the present invention, and the present invention is not limited to the following specific embodiments.
It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar parts. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for convenience of description and simplicity of description, but does not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the patent, and the specific meanings of the terms will be understood by those skilled in the art according to specific situations.
Referring to fig. 1 and 2, a white LED lamp bead 10 includes a support 100, an LED chip 200, a first fluorescent adhesive layer 300, and a second fluorescent adhesive layer 400. The bracket 100 is provided with a light emitting groove 110, and the light emitting groove 110 is provided with a positive electrode pad 111 and a negative electrode pad 112. The LED chip 200 is disposed in the light emitting groove 110, and the LED chip 200 is electrically connected to the positive electrode pad 111 and the negative electrode pad 112, respectively. The first fluorescent glue layer 300 includes a first transparent glue base layer 310 and red fluorescent powder particles 320, the first transparent glue base layer 310 is disposed in the light-emitting groove 110, the first transparent glue base layer 310 covers the outer side of the LED chip 200, and the red fluorescent powder particles 320 are disposed in the first transparent glue base layer 310. The second fluorescent glue layer 400 includes a second transparent glue base layer 410 and green fluorescent powder particles 420, a first surface of the second transparent glue base layer 410 is connected with a surface of the first transparent glue base layer 310 away from the LED chip 200, a second surface of the second transparent glue base layer 410 extends to protrude to the outside of the light emitting groove 110, and the green fluorescent powder particles 420 are disposed in the second transparent glue base layer 410.
It should be noted that, in this embodiment, the support 100 is a square structure having the light-emitting groove 110, the light-emitting groove 110 may be configured to accommodate the LED chip 200, and then the LED chip 200 is packaged by the first fluorescent glue layer 300 and the second fluorescent glue layer 400, so as to obtain the white LED lamp bead, the light-emitting wavelength of the LED chip 200 is 445nm to 470nm, which is a blue LED chip 200, specifically, the bottom of the light-emitting groove 110 is plated with the positive pad 111 and the negative pad 112, the positive pad 111 and the negative pad 112 are disposed at an interval, the outer side wall of the support 100 may be provided with the positive pin and the negative pin, the positive pad 111 and the negative pad 112 may be electrically connected with the positive pin and the negative pin, respectively, so as to realize electrical connection with an external power supply through the positive pin and the negative pin, and thus realize power supply to the LED chip 200 electrically connected with the positive pad 111 and the negative pad 112, respectively, the normal operation of the LED chip 200 is ensured, by arranging the first transparent adhesive base layer 310 and the second transparent adhesive base layer 410, the first transparent adhesive base layer 310 and the second transparent adhesive base layer 410 are sequentially overlapped, that is, the first transparent adhesive base layer 310 is coated on the LED chip 200 by dispensing, so that the LED chip 200 is completely covered by the first transparent adhesive base layer 310, the second transparent adhesive base layer 410 is coated by dispensing after drying and curing, so that the second transparent adhesive base layer 410 overflows the light emitting slot 110, the first surface and the second surface of the second transparent adhesive base layer 410 are arranged back to back, so that the second surface of the second transparent adhesive base layer 410, which is far away from the first transparent adhesive base layer 310, extends and protrudes to the outer side of the light emitting slot 110, the red phosphor particles 320 and the green phosphor particles 420 are respectively arranged in the first transparent adhesive base layer 310 and the second transparent adhesive base layer 410, it is worth mentioning that the red phosphor particles 320 and the green phosphor particles 420 are respectively and uniformly mixed with the first transparent adhesive base layer 310 and the second transparent adhesive base layer 410, make red phosphor powder granule 320 and green phosphor powder granule 420 evenly set up respectively in first transparent adhesive tape base layer 310 and second transparent adhesive tape base layer 410, so, can two-layerly excite red phosphor powder granule 320 and green phosphor powder granule 420 respectively, can avoid mixing red phosphor powder granule 320 and green phosphor powder granule 420, thereby avoid red phosphor powder granule 320 to excite the efficiency and reduce, thereby the whole excitation efficiency of this white light LED lamp pearl has been improved, reduce the light loss, simultaneously, through extending the second face with second transparent adhesive tape base layer 410 and protruding to the outside of light-emitting slot 110, thereby make second transparent adhesive tape base layer 410 set up in support 100, can increase the play plain noodles, thereby be favorable to improving the luminance of this white light LED lamp pearl, obtain the white light LED lamp pearl that luminous efficiency is high and luminance.
In order to better adjust the color area and the color rendering index of the prepared white light LED lamp bead, in one embodiment, the first fluorescent adhesive layer further includes green fluorescent powder particles and yellow fluorescent powder particles, the green fluorescent powder particles and the yellow fluorescent powder particles are respectively disposed in the first transparent adhesive layer, the second fluorescent adhesive layer further includes red fluorescent powder particles and yellow fluorescent powder particles, and the red fluorescent powder particles and the yellow fluorescent powder particles are respectively disposed in the second transparent adhesive layer. It can be understood that, specifically, a small amount of green phosphor particles and yellow phosphor particles are added to the first phosphor layer, which is beneficial to better adjusting the color gamut and the color rendering index of the prepared white LED lamp bead, and similarly, a small amount of red phosphor particles and yellow phosphor particles are added to the second phosphor layer, which is beneficial to better adjusting the color gamut and the color rendering index of the prepared white LED lamp bead.
Referring to fig. 1 and fig. 2, in an embodiment, the LED chip further includes a first metal line 500 and a second metal line 600, two ends of the first metal line 500 are electrically connected to the positive electrode pad 111 and a first end of the LED chip 200, respectively, and two ends of the second metal line 600 are electrically connected to the negative electrode pad 112 and a second end of the LED chip 200, respectively. It can be understood that the first metal wire 500 is arranged and can be used for being connected with the positive electrode pad 111 and the positive electrode of the LED chip 200, and the second metal wire 600 is arranged and can be used for being connected with the negative electrode pad 112 and the negative electrode of the LED chip 200, so that the LED chip 200 is electrically connected with the positive electrode pad 111 and the negative electrode pad 112, a circuit is connected, and normal light emission of the LED chip 200 is ensured.
Referring to fig. 1, in one embodiment, the thickness of the first transparent adhesive base layer 310 is equal to the depth of the light-emitting groove 110. It can be understood, through filling the notch to light-emitting slot 110 with first transparent adhesive tape base layer 310 coating, thereby make first transparent adhesive tape base layer 310 fill full light-emitting slot 110, the size that operating personnel passed through light-emitting slot 110 of being convenient for, the quantity of first transparent adhesive tape base layer 310 of accurate control and red phosphor powder granule 320, thereby be favorable to obtaining the unanimous and the unanimous white light LED lamp pearl finished product of quality of outward appearance, and simultaneously, can also obtain the smooth first fluorescent adhesive tape layer 300 structure with support 100 parallel and level, be convenient for follow-up second fluorescent adhesive tape layer 400 machine-shaping.
In one embodiment, the second side of the second transparent adhesive base layer 410 is an arc-shaped side. It can be understood that the second surface of the second transparent adhesive tape base layer 410 is set to be an arc-shaped surface, so that the light emitting surface is arc-shaped, the area of the light emitting surface is increased, the improvement of the light emitting brightness is facilitated, the light emitting surface is smooth, and the light emitting effect is better.
In another embodiment, the second surface of the second transparent adhesive base layer 410 is a hemispherical surface. Therefore, the area of the light emitting surface is increased, the improvement of the light emitting brightness is facilitated, the light emitting surface is smooth, and the light emitting effect is better.
In one embodiment, a surface of the first transparent adhesive base layer 310 away from the LED chip 200 is provided with a plurality of protrusions (not shown), and the protrusions are distributed in a matrix shape around a central axis of the first transparent adhesive base layer 310. It can be understood, through being provided with a plurality of bulges, and each bulge is the matrix form with the central axis of first transparent adhesive tape base layer 310 and distributes, can guarantee each bulge evenly distributed, can increase the surface area of the one side that LED chip 200 was kept away from to first transparent adhesive tape base layer 310, thereby increase the area of contact of first transparent adhesive tape base layer 310 and second transparent adhesive tape base layer 410, can improve the cohesion between first transparent adhesive tape base layer 310 and the second transparent adhesive tape base layer 410, improve the structural stability of first transparent adhesive tape base layer 310 and second transparent adhesive tape base layer 410, thereby improve the structural stability of this white light LED lamp pearl.
In one embodiment, the cross-sectional area of each of the protrusions gradually decreases from the end near the first transparent adhesive base layer 310 to the end far away from the first transparent adhesive base layer 310. It can be understood that the cross-sectional area of the protrusion is gradually reduced from the end close to the first transparent adhesive tape base layer 310 to the end away from the first transparent adhesive tape base layer 310, so that the protrusion is of a pointed structure, and when the second transparent adhesive tape base layer 410 is coated, the protrusion can also play a flow guide structure, so that the second transparent adhesive tape base layer 410 is better and faster attached to the first transparent adhesive tape base layer 310, and the production efficiency and the quality of a finished product are improved.
In one embodiment, the first transparent adhesive base layer 310 is one of an epoxy adhesive base layer, a silicone adhesive base layer, and a UV (UV glue) adhesive base layer. The second transparent adhesive base layer 410 is one of an epoxy adhesive base layer, a silica gel base layer, and a UV adhesive base layer. It can be understood that epoxy glue, silica gel and UV glue are common packaging glue, have good leakproofness and insulating nature, can seal protection and insulation to LED chip 200 well, guarantee this white light LED lamp pearl's structural stability.
In one embodiment, there is provided a lighting device comprising: the white light LED lamp bead 10 in any one of the above embodiments. In this embodiment, lighting device still includes the LED lamp plate for support each white light LED lamp pearl of installation, then install the LED lamp plate in specific shell, thereby obtain specific lighting device, for example, lighting device is fluorescent tube, panel light, lamp house lamp or TV set backlight etc..
Compared with the prior art, the utility model has at least the following advantages:
the utility model arranges the first transparent adhesive tape base layer and the second transparent adhesive tape base layer which are overlapped in sequence, and the red fluorescent powder particles and the green fluorescent powder particles are respectively arranged in the first transparent adhesive tape base layer and the second transparent adhesive tape base layer, thus, can respectively excite the red phosphor particles and the green phosphor particles in two layers, can avoid mixing the red phosphor particles and the green phosphor particles, thereby avoiding the reduction of the excitation efficiency of the red fluorescent powder particles, improving the overall excitation efficiency of the white light LED lamp bead, reducing light loss, and simultaneously, by extending the second surface of the second transparent adhesive base layer to protrude to the outer side of the light-emitting groove, therefore, the second transparent adhesive tape base layer protrudes out of the support, the light emitting surface can be increased, the brightness of the white light LED lamp bead is improved, and the white light LED lamp bead with high light emitting efficiency and high brightness is obtained.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a white light LED lamp pearl which characterized in that includes:
the light-emitting device comprises a bracket, a light-emitting groove and a light-emitting component, wherein the bracket is provided with a positive bonding pad and a negative bonding pad;
the LED chip is arranged in the light-emitting groove and is electrically connected with the anode bonding pad and the cathode bonding pad respectively;
a first fluorescent glue layer; the first fluorescent glue layer comprises a first transparent glue base layer and red fluorescent powder particles, the first transparent glue base layer is arranged in the light-emitting groove, the first transparent glue base layer is coated on the outer side of the LED chip, and the red fluorescent powder particles are arranged in the first transparent glue base layer; and
the second fluorescent glue layer comprises a second transparent glue base layer and green fluorescent powder particles, the first face of the second transparent glue base layer is connected with the face, far away from the LED chip, of the first transparent glue base layer, the second face of the second transparent glue base layer extends to protrude to the outer side of the light emitting groove, and the green fluorescent powder particles are arranged in the second transparent glue base layer.
2. The white light LED lamp bead of claim 1, further comprising a first metal wire and a second metal wire, wherein two ends of the first metal wire are electrically connected to the positive electrode bonding pad and the first end of the LED chip, respectively, and two ends of the second metal wire are electrically connected to the negative electrode bonding pad and the second end of the LED chip, respectively.
3. The white LED lamp bead of claim 1, wherein the thickness of the first transparent adhesive base layer is equal to the depth of the light emitting groove.
4. The white LED lamp bead of claim 1, wherein the second face of the second transparent adhesive base layer is an arc-shaped face.
5. The white LED lamp bead of claim 1, wherein the second surface of the second transparent adhesive base layer is a hemispherical surface.
6. The white light LED lamp bead of claim 1, wherein a plurality of protrusions are disposed on a surface of the first transparent adhesive base layer away from the LED chip, and the protrusions are distributed in a matrix shape with a central axis of the first transparent adhesive base layer.
7. The white LED lamp bead of claim 6, wherein the cross-sectional area of each of the protrusions decreases from the end near the first transparent adhesive base layer to the end away from the first transparent adhesive base layer.
8. The white LED lamp bead according to any one of claims 1-7, wherein the first transparent adhesive base layer is one of an epoxy adhesive base layer, a silicone adhesive base layer, and a UV adhesive base layer.
9. The white LED lamp bead according to any one of claims 1-7, wherein the second transparent adhesive base layer is one of an epoxy adhesive base layer, a silicone adhesive base layer, and a UV adhesive base layer.
10. An illumination device, comprising: the white light LED lamp bead of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122296877.8U CN215496771U (en) | 2021-09-23 | 2021-09-23 | Lighting device and white light LED lamp bead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122296877.8U CN215496771U (en) | 2021-09-23 | 2021-09-23 | Lighting device and white light LED lamp bead |
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| Publication Number | Publication Date |
|---|---|
| CN215496771U true CN215496771U (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122296877.8U Active CN215496771U (en) | 2021-09-23 | 2021-09-23 | Lighting device and white light LED lamp bead |
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| CN (1) | CN215496771U (en) |
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- 2021-09-23 CN CN202122296877.8U patent/CN215496771U/en active Active
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