High-voltage five-color LED lamp bead
By designing a series-connected light emitting chipset and multiple series-connected red, blue and green chipsets in RGB color light beads, the problems of luminescence inhomogeneity and circuit complexity caused by low voltage are solved, and efficient and uniform LED light emitting and cost reduction are achieved.
Patent Information
- Application Number
- CN202422304038.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-21
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-21
AI Technical Summary
The existing RGB color light beads have uneven light emission due to low voltage, complex circuit structure and high cost.
A high-voltage five-color LED lamp bead is designed to increase the working voltage through the light emitting chip set connected in series, and ensure that the working voltage of each light emitting unit is consistent through multiple red, blue and green light chip sets connected in series.
The uniform luminescence of LED lamp beads is achieved, the circuit design is simplified, the cost is reduced, and the luminous efficiency and reliability are improved.
Smart Images
Figure CN223036229U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of LED lamp beads, in particular to a high-voltage five-color LED lamp bead.
Background Art
[0002] RGB color lamp beads are a kind of lighting device based on light-emitting diodes, which are widely used because of their advantages such as high brightness, rich colors, energy conservation and environmental protection. The light-emitting principle of RGB color lamp beads is to obtain various color lights according to the color change of the three primary colors of light and the color mixing between them.
[0003] At present, most RGB color lamp beads on the market have a working voltage of 3V, belonging to low-voltage products. However, low-voltage RGB color lamp beads have serious voltage drop problems, resulting in uneven light emission of RGB color lamp beads. At the same time, low-voltage RGB color lamp beads usually require an additional drive circuit to convert and stabilize the voltage, making the circuit design structure of low-voltage RGB color lamp beads complex and the design cost high.
[0004] Therefore, the research on high-voltage RGB color lamp beads with relatively high voltages above 3V, such as 6V, 9V, 12V, 18V, etc., has become the current development trend.
Content of the Utility Model
[0005] In order to solve the technical problems of uneven light emission, complex circuit structure and high cost caused by low voltage of current RGB color lamp beads, the utility model proposes a high-voltage five-color LED lamp bead.
[0006] The utility model is realized by the following technical solutions:
[0007] A high-voltage five-color LED lamp bead, including a bracket, on which a first cup body, a second cup body and a third cup body are provided. A first light-emitting unit for emitting yellow or white light is provided on the first cup body, a second light-emitting unit for emitting three kinds of light of red, green and blue is provided on the second cup body, a third light-emitting unit for emitting yellow or white light is provided on the third cup body, and a light-emitting chip group connected in series for increasing the working voltage of the lamp bead and making the working voltages of each light-emitting unit consistent is further provided on the bracket.
[0008] As described above, for a high-voltage five-color LED lamp bead, the light-emitting chip group includes a first light-emitting chip group arranged on the first light-emitting unit, a second light-emitting chip group arranged on the second light-emitting unit, and a third light-emitting chip group arranged on the third light-emitting unit.
[0009] A high-voltage five-color LED lamp bead as described above, wherein the first light-emitting chip group includes a plurality of first light-emitting chips connected in series to increase the working voltage, and the third light-emitting chip group includes a plurality of third light-emitting chips connected in series to increase the working voltage.
[0010] A high-voltage five-color LED lamp bead as described above, wherein the number of the first light-emitting chips is the same as the number of the third light-emitting chips.
[0011] A high-voltage five-color LED lamp bead as described above, wherein the second light-emitting chip group includes a blue light chip group for emitting blue light, a red light chip group for emitting red light, and a green light chip group for emitting green light. The blue light chip group includes a plurality of blue light chips connected in series, the red light chip group includes a plurality of red light chips connected in series, and the green light chip group includes a plurality of green light chips connected in series.
[0012] A high-voltage five-color LED lamp bead as described above, wherein the number of the red light chips is more than the number of the blue light chips.
[0013] A high-voltage five-color LED lamp bead as described above, wherein the number of the red light chips is more than the number of the green light chips.
[0014] A high-voltage five-color LED lamp bead as described above, wherein the surface of the first cup body is provided with a first phosphor layer covering the first light-emitting unit. The first phosphor layer is a phosphor corresponding to the color of the light emitted according to the actual requirements of the first light-emitting unit. The surface of the third cup body is provided with a second phosphor layer covering the third light-emitting unit. The second phosphor layer is a phosphor corresponding to the color of the light emitted according to the actual requirements of the third light-emitting unit.
[0015] A high-voltage five-color LED lamp bead as described above, wherein the working voltage of the first light-emitting unit is 3V - 100V, the working voltage of the second light-emitting unit is 3V - 100V, and the working voltage of the third light-emitting unit is 3V - 100V.
[0016] A high-voltage five-color LED lamp bead as described above, wherein the bracket is further provided with isolation protrusions for light source isolation. The isolation protrusions include a first isolation protrusion disposed between the first cup body and the second cup body and a second isolation protrusion disposed between the second cup body and the third cup body. The first light-emitting chip is a blue light chip or a first integrated chip integrating a plurality of blue light chips connected in series. A plurality of the first light-emitting chips are connected in series by gold wires or silver wires. The third light-emitting chip is a blue light chip or a first integrated chip integrating a plurality of blue light chips connected in series. A plurality of the third light-emitting chips are connected in series by gold wires or silver wires.
[0017] Compared with the prior art, a high-voltage five-color LED lamp bead proposed by the present utility model has the following beneficial effects:
[0018] 1. The LED lamp bead proposed by the present utility model improves the working voltage of the LED lamp bead through a series-connected light-emitting chip group, which helps to reduce the required driving current, reduces energy loss during the power supply step-down process, and improves the luminous efficiency of the LED lamp bead; at the same time, the series-connected light-emitting chip group can also keep the working voltages of each light-emitting unit consistent, enabling the LED lamp bead to emit light more evenly. Also, there is no need to additionally provide a voltage-dividing circuit to distribute or adjust the voltage, simplifying the circuit design and reducing costs.
[0019] 2. The number of red light chips in the second light-emitting chip group proposed by the present utility model is respectively more than the number of blue light chips and the number of green light chips, which can ensure that the working voltages of the blue light chip group, the red light chip group, and the green light chip group are the same, enabling the blue light chip group, the red light chip group, and the green light chip group to be powered in parallel using a common power supply voltage without the need for an additional voltage-dividing circuit or voltage-transforming circuit to achieve voltage distribution or adjustment; at the same time, since the red light chips can work at a lower voltage, this helps to reduce the heat loss of the LED lamp bead and improve the reliability and energy-saving effect of the LED lamp bead.
[0020] 3. A plurality of blue light chips are respectively connected in series to the first light-emitting chip group and the third light-emitting chip group proposed by the present utility model. On the one hand, this is to increase the working voltage of the first light-emitting unit and the third light-emitting unit, thereby increasing the working voltage of the LED lamp bead. On the other hand, since the blue light chips have a shorter wavelength and higher energy, their own working voltage is higher than that of other chips, and through the series-connected circuit design, the working voltage of the LED lamp bead can be significantly increased.
Description of the Drawings
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for description in the embodiments.
[0022] Figure 1 is a schematic structural diagram of the present utility model;
[0023] Figure 2 is a schematic structural diagram of the light-emitting chip of the present utility model being an integrated chip.
Detailed Embodiment
[0024] In order to make the technical problems, technical solutions, and beneficial effects solved by the present utility model clearer, the following further details the present utility model in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0025] Specific embodiments will be further described in conjunction with Figures 1 to 2 As shown in Figures 1 to 2 , the technical solution of the present utility model will be further described. A high-voltage five-color LED lamp bead includes a bracket 1, and a first cup 2, a second cup 3, and a third cup 4 are provided on the bracket 1. A first light-emitting unit 21 for emitting yellow or white light is provided on the first cup 2. A second light-emitting unit 31 for emitting three colors of red, green, and blue light is provided on the second cup 3. A third light-emitting unit 41 for emitting yellow or white light is provided on the third cup 4. A light-emitting chip group 5 connected in series is further provided on the bracket 1 for increasing the working voltage of the lamp bead and making the working voltages of each light-emitting unit consistent. The LED lamp bead increases the working voltage of the LED lamp bead through the series-connected light-emitting chip group 5, which helps to reduce the required driving current, reduces energy loss during the power supply step-down process, and improves the luminous efficiency of the LED lamp bead. At the same time, the series-connected light-emitting chip group 5 can also make the working voltages of each light-emitting unit consistent, enabling the LED lamp bead to emit light more uniformly. At the same time, there is no need to additionally provide a voltage-dividing circuit to distribute or adjust the voltage, simplifying the circuit design and reducing the cost.
[0026] Further, as a preferred embodiment of this solution rather than a limitation, the light-emitting chip group 5 includes a first light-emitting chip group 51 provided on the first light-emitting unit 21, a second light-emitting chip group 52 provided on the second light-emitting unit 31, and a third light-emitting chip group 53 provided on the third light-emitting unit 41.
[0027] Further, as a preferred embodiment of this solution rather than a limitation, the second light-emitting chip group 52 includes a blue light chip group 521 for emitting blue light, a red light chip group 522 for emitting red light, and a green light chip group 523 for emitting green light. The blue light chip group 521 includes a plurality of serially connected blue light chips. The red light chip group 522 includes a plurality of serially connected red light chips. The green light chip group 523 includes a plurality of serially connected green light chips;
[0028] Specifically, since the working voltage of the red light chip is lower than that of the blue light chip and the green light chip, the number of red light chips is more than that of blue light chips, and the number of red light chips is more than that of green light chips;
[0029] More specifically, through the second light-emitting chip group 52, the working voltage of the second light-emitting unit 31 can be 3V - 100V.
[0030] In this embodiment, the number of red light chips is respectively more than the number of blue light chips and the number of green light chips, which can ensure that the working voltages of the blue light chip group, the red light chip group and the green light chip group are the same, so that the blue light chip group, the red light chip group and the green light chip group can be connected in parallel and share a power supply voltage without the need for an additional voltage dividing circuit or voltage transforming circuit to achieve voltage distribution or regulation; at the same time, since the red light chips can work at a lower voltage, this helps to reduce the heat loss of the LED lamp beads and improve the reliability and energy-saving effect of the LED lamp beads.
[0031] Further, as a preferred implementation manner of this solution rather than a limitation, the first light-emitting chip group 51 includes a plurality of first light-emitting chips 511 connected in series for increasing the working voltage. A plurality of the first light-emitting chips 511 are connected in series by gold wires or silver wires. The first light-emitting chip 511 can be a blue light chip or a green light chip. Preferably, the first light-emitting chip 511 is a blue light chip;
[0032] Furthermore, as a preferred implementation manner of this solution rather than a limitation, the third light-emitting chip group 53 includes a plurality of third light-emitting chips 531 connected in series for increasing the working voltage. A plurality of the third light-emitting chips 531 are connected in series by gold wires or silver wires. The third light-emitting chip 531 can be a blue light chip or a green light chip. Preferably, the third light-emitting chip 531 is a blue light chip;
[0033] Wherein, the number of the first light-emitting chips 511 is the same as the number of the third light-emitting chips 531;
[0034] In addition, a plurality of the first light-emitting chips 511 connected in series can make the working voltage of the first light-emitting unit 2 be 3V - 100V, and a plurality of the third light-emitting chips 531 connected in series can make the working voltage of the third light-emitting unit 4 be 3V - 100V.
[0035] In this embodiment, a plurality of blue light chips are respectively connected in series to the first light-emitting chip group and the third light-emitting chip group. On the one hand, it is to increase the working voltages of the first light-emitting unit and the third light-emitting unit, thereby increasing the working voltage of the LED lamp beads. On the other hand, since the blue light chips have a shorter wavelength and higher energy, their own working voltage is higher than that of other chips, and through the circuit design of series connection, the working voltage of the LED lamp beads can be significantly increased; at the same time, the same number of the first light-emitting chips and the third light-emitting chips makes the working voltages of the first light-emitting unit and the third light-emitting unit consistent.
[0036] Further, as a preferred implementation manner of this solution rather than a limitation, a first phosphor layer (not marked in the figure) covering the first light-emitting unit 21 is provided on the surface of the first cup body 2, and a second phosphor layer (not marked in the figure) covering the third light-emitting unit 41 is provided on the surface of the third cup body 4. The first phosphor layer is a phosphor corresponding to the color of yellow light or white light emitted by the first light-emitting unit 21, and the second phosphor layer is a phosphor corresponding to the color of yellow light or white light emitted by the third light-emitting unit 41;
[0037] Specifically, if the first light-emitting unit 21 needs to emit yellow light, the first phosphor layer is a yellow phosphor; if the first light-emitting unit 21 needs to emit white light, the first phosphor layer is a white phosphor; the same applies to the third light-emitting unit 41;
[0038] Generally, the colors of the first phosphor layer and the second phosphor layer are not the same, so that the first light-emitting unit 21 and the third light-emitting unit 41 emit different colors of light to meet the requirements of the five-color light beads. The first light-emitting unit 21 and the third light-emitting unit 41 can also emit other colors of light through phosphor layers of other colors.
[0039] In this embodiment, different colors of light can be emitted through phosphor layers of different colors, reducing the dependence on high-cost light-emitting chips and lowering the cost; the phosphor layer also has a protective effect on the light-emitting chip, which can reduce the interference of the external environment on the light-emitting chip, thereby improving the light-emitting reliability and service life of the light-emitting chip.
[0040] Further, as a preferred implementation manner of this solution rather than a limitation, the first light-emitting chip 511 can also be a first integrated chip integrated with a plurality of blue chips connected in series. The blue chip group 521 can also be a blue integrated chip integrated with a plurality of blue chips connected in series. The green chip group 523 can also be a green integrated chip integrated with a plurality of green chips connected in series. The third light-emitting chip 531 can also be a second integrated chip integrated with a plurality of blue chips connected in series.
[0041] In this embodiment, the high-voltage integrated chip can reduce the energy loss in the current conversion process and improve the light-emitting efficiency of the LED lamp bead; the high-voltage integrated chip also has better heat dissipation ability, which can reduce the complexity of the heat dissipation circuit and the external circuit, simplify the circuit design, and lower the cost.
[0042] Further, as a preferred implementation manner of this solution rather than a limitation, an isolation protrusion 6 for light source isolation is further provided on the bracket 1. The isolation protrusion 6 includes a first isolation protrusion 61 provided between the first cup body 2 and the second cup body 3 and a second isolation protrusion 62 provided between the second cup body 3 and the third cup body 4.
[0043] In this embodiment, the design of the isolation protrusions can isolate light-emitting units of different colors, reduce the mutual interference between lights of different colors, and thus improve the lighting quality of the LED lamp beads. The isolation protrusions can also isolate the heat of different light-emitting units, improving the thermal stability and heat dissipation ability of the LED lamp beads.
[0044] Further, as a preferred implementation manner rather than a limitation of this solution, the first light-emitting unit 21 and the third light-emitting unit 41 are symmetrically distributed up and down with the second light-emitting unit 31 as the center;
[0045] Among them, the blue light chip group 521 and the green light chip group 523 provided in the second light-emitting unit 31 are symmetrically distributed up and down with the red light chip group 522 as the center.
[0046] In this embodiment, the light-emitting units and light-emitting chips that are symmetrically distributed up and down can make the light-emitting area of the LED lamp beads relatively uniform and balanced, with a good light-emitting effect. At the same time, it also helps the uniform distribution and effective dissipation of heat, thereby improving the heat dissipation efficiency of the LED lamp beads.
[0047] Further, as a preferred implementation manner rather than a limitation of this solution, the bracket 1 is provided with a first conductive pad 22 located inside the first cup 2, and a first positive electrode pin 23 and a first negative electrode pin 24 oppositely arranged on both sides of the first conductive pad 22. The first light-emitting unit 21 is attached to the first conductive pad 22, and the first light-emitting unit 21 is electrically connected to the first positive electrode pin 23 and the first negative electrode pin 24 respectively;
[0048] The bracket 1 is further provided with a second conductive pad 32 located inside the second cup 3, and a second positive electrode pin 33 and a second negative electrode pin 34, a third positive electrode pin 35 and a third negative electrode pin 36, a fourth positive electrode pin 37 and a fourth negative electrode pin 38 oppositely arranged on both sides of the second conductive pad 32. The second light-emitting unit 31 is attached to the second conductive pad 32. The blue light chip group 312 on the second light-emitting unit 31 is electrically connected to the second positive electrode pin 33 and the second negative electrode pin 34 respectively. The red light chip group 313 on the second light-emitting unit 31 is electrically connected to the third positive electrode pin 35 and the third negative electrode pin 36 respectively. The green light chip group 314 on the second light-emitting unit 31 is electrically connected to the fourth positive electrode pin 37 and the fourth negative electrode pin 38 respectively;
[0049] The bracket 1 is further provided with a third conductive pad 42 located inside the third cup 4, and a fifth positive electrode pin 43 and a fifth negative electrode pin 44 oppositely arranged on both sides of the third conductive pad. The third light-emitting unit 41 is attached to the third conductive pad, and the third light-emitting unit 41 is electrically connected to the fifth positive electrode pin 43 and the fifth negative electrode pin 44 respectively.
[0050] In this embodiment, the pins are arranged on both sides of the conductive pad, which can keep the bonding wires as far away from the light-emitting area of the light-emitting unit as possible, avoiding the bonding wires from blocking the light-emitting area too much, thus being more conducive to light emission; the independently arranged conductive pad also helps to better improve the heat dissipation of the LED lamp bead.
[0051] The working principle of this embodiment is as follows:
[0052] A high-voltage five-color LED lamp bead proposed by the present utility model, through the series design of the light-emitting chip group 5, can make the working voltages of the first light-emitting unit 21, the second light-emitting unit 31, and the third light-emitting unit 41 on the bracket 1 meet different working voltages between 3V and 100V, and the working voltages of the first light-emitting unit 21, the second light-emitting unit 31, and the third light-emitting unit 41 can be kept consistent to meet the parallel sharing of a power supply voltage. Among them, the specific principle is:
[0053] The first light-emitting chip group 51 and the third light-emitting chip group 53 are respectively connected in series with the same number of blue light chips. By connecting in series, the working voltage is increased, so that the working voltages of the first light-emitting chip group 51 and the third light-emitting chip group 53 can both meet the requirements of 3V - 100V, and both being connected in series with the same number of blue light chips makes the working voltages of the first light-emitting chip group 51 and the third light-emitting chip group 53 consistent, so that the working voltages of the first light-emitting unit 21 and the third light-emitting unit 41 can be kept consistent and meet the requirements of 3V - 100V;
[0054] The blue light chip group 521 is composed of multiple blue light chips connected in series, the red light chip group 522 is composed of multiple red light chips connected in series, and the green light chip group 523 is composed of multiple green light chips connected in series. At the same time, since the operating voltage of the red light chip is lower than the working voltages of the blue light chip and the green light chip, the number of red light chips is respectively more than the number of blue light chips and green light chips, so that the working voltage of the second light-emitting chip group 52 and thus the second light-emitting unit 31 can meet the requirements of 3V - 100V;
[0055] By matching the number of light-emitting chips of each light-emitting unit and calculating the working voltages of each light-emitting unit, the working voltages of the first light-emitting unit 21, the second light-emitting unit 31, and the third light-emitting unit 41 are kept consistent. For example, let the working voltage of the first light-emitting chip 511 be u1, the number be n1, the working voltage of the blue light chips in the blue light chip group 521 be u2, the number be n2, the working voltage of the red light chips in the blue light chip group 521 be u3, the number be n3, and the working voltage of the green light chips in the blue light chip group 521 be u4, the number be n4. As long as the formula u1n1 = u2n2 = u3n3 = u4n4 is satisfied, the working voltages of the first light-emitting unit 21, the second light-emitting unit 31, and the third light-emitting unit 41 can be kept consistent.
[0056] Those of ordinary skill in the art should understand that: As described above, an implementation manner is provided in combination with specific content, and it is not considered that the specific implementation of the present utility model is limited only to these descriptions. At the same time, due to different industry names, it is not limited to the above names, nor limited to English names. Any method, structure, etc. that is similar or identical to the present utility model, or any technical deduction or replacement made under the premise of the concept of the present utility model, should be regarded as the protection scope of the present utility model.
Claims
1. A high-voltage five-color LED lamp bead, characterized in that: The invention comprises a support (1), wherein a first cup body (2), a second cup body (3) and a third cup body (4) are provided on the support (1), wherein the first cup body (2) is provided with a first light-emitting unit (21) for emitting yellow light or white light, the second cup body (3) is provided with a second light-emitting unit (31) for emitting red, green and blue light, and the third cup body (4) is provided with a third light-emitting unit (41) for emitting yellow light or white light. The support (1) is also provided with a light-emitting chip group (5) connected in series for increasing the operating voltage and maintaining the operating voltage of each light-emitting unit consistent.
2. A high-voltage five-color LED lamp bead according to claim 1, characterized in that: The light-emitting chip group (5) comprises a first light-emitting chip group (51) arranged in the first light-emitting unit (21), a second light-emitting chip group (52) arranged in the second light-emitting unit (31), and a third light-emitting chip group (53) arranged in the third light-emitting unit (41).
3. A high-voltage five-color LED lamp bead according to claim 2, characterized in that: The first light-emitting chip group (51) comprises a plurality of first light-emitting chips (511) connected in series for increasing the operating voltage, and the third light-emitting chip group (53) comprises a plurality of third light-emitting chips (531) connected in series for increasing the operating voltage.
4. A high-voltage five-color LED lamp bead according to claim 3, characterized in that: The number of the first light-emitting chips (511) is the same as the number of the third light-emitting chips (531).
5. The high-voltage five-color LED lamp bead according to claim 2, characterized in that: The second light-emitting chipset (52) comprises a blue light chipset (521) for emitting blue light, a red light chipset (522) for emitting red light, and a green light chipset (523) for emitting green light; the blue light chipset (521) comprises a plurality of blue light chips connected in series, the red light chipset (522) comprises a plurality of red light chips connected in series, and the green light chipset (523) comprises a plurality of green light chips connected in series.
6. A high-voltage five-color LED lamp bead according to claim 5, characterized in that: The number of the red light chips is greater than the number of the blue light chips.
7. The high-voltage five-color LED lamp bead according to claim 5, characterized in that: The number of the red light chips is greater than the number of the green light chips.
8. The high-voltage five-color LED lamp bead according to claim 1, characterized in that: The surface of the first cup body (2) is provided with a first phosphor layer covering the first light-emitting unit (21), the first phosphor layer being phosphor of a color corresponding to the color light emitted by the first light-emitting unit (21) according to actual needs, and the surface of the third cup body (4) is provided with a second phosphor layer covering the third light-emitting unit (41), the second phosphor layer being phosphor of a color corresponding to the color light emitted by the third light-emitting unit (41) according to actual needs.
9. The high-voltage five-color LED lamp bead according to claim 1, characterized in that: The operating voltage of the first light-emitting unit (21) is 3V-100V, the operating voltage of the second light-emitting unit (31) is 3V-100V, and the operating voltage of the third light-emitting unit (41) is 3V-100V.
10. The high-voltage five-color LED lamp bead according to claim 4, characterized in that: The bracket (1) is also provided with an isolation protrusion (6) for isolating the light source, the isolation protrusion (6) comprising a first isolation protrusion (61) arranged between the first cup body (2) and the second cup body (3), and a second isolation protrusion (62) arranged between the second cup body (3) and the third cup body (4); The first light-emitting chip (511) is a blue light chip or a first integrated chip integrating a plurality of blue light chips connected in series, and the plurality of first light-emitting chips (511) are connected in series via gold wires or silver wires; The third light-emitting chip (531) is a blue light chip or a first integrated chip integrating a plurality of blue light chips connected in series, and the plurality of third light-emitting chips (531) are connected in series via gold wires or silver wires.