Double-blue-light combined LED package

Abstract

The utility model discloses a double-blue-light combined LED package, and relates to the technical field of LEDs. The LED packaging structure comprises a packaging support and LED chips arranged in the packaging support, the number of the LED chips is two, a fluorescent glue layer is arranged on the top of each LED chip, an outer sealing glue layer covering the LED chips is arranged in the packaging support, and the LED chips are electrically connected in series. By the adoption of the technical scheme, full-spectrum simulation can be achieved, and the advantage of low cost is achieved, so that the LED lamp can be widely used for replacing a traditional three-color RGB scheme, the LED lamp can better meet the lighting requirements in different scenes through the flexible packaging technology and diversified control modes, and more comfortable and efficient lighting experience is provided for people.

Description

Technical Field

[0001] The utility model relates to the technical field of LEDs, in particular to a double blue light combined LED package. Background Art

[0002] In the prior art, LED packages generally use red, green and blue LED light sources to mix to produce various colors. However, this three-color LED package may have color unevenness at a specific color temperature, because the color temperature and color of the light source are mixed by the three-color LED light source. Under specific color temperature requirements, if the three-color LED light source cannot achieve the ideal color mixing ratio, it will cause color unevenness or color deviation. In addition, the production cost of this three-color LED package is relatively high, resulting in more fine processing and quality control required during the production process, which greatly increases the manufacturing cost. Utility Model Content

[0003] The purpose of the utility model is to provide a dual blue light combination LED package in response to the defects and shortcomings of the prior art. It adopts more efficient mold design and manufacturing technology. Compared with three-color LED packages, it has the advantages of higher brightness, lower cost, full-spectrum dimming and higher energy efficiency. It is suitable for different scenarios and shows superiority in energy saving and environmental protection.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A dual blue light combination LED package comprises a package bracket and an LED chip arranged in the package bracket, wherein the number of the LED chips is two, a fluorescent glue layer is arranged on the top of the LED chip, an outer sealing glue layer covering the LED chip is arranged in the package bracket, and the electrical connection between the LED chips is in series.

[0006] The LED chips are respectively a low-frequency blue light chip and a high-frequency blue light chip, the first fluorescent glue layer is in contact with and connected to the low-frequency blue light chip, and the second fluorescent glue layer is in contact with and connected to the high-frequency blue light chip. The band range of the low-frequency blue light chip is 436-445nm, and the band range of the high-frequency blue light chip is 457-465nm.

[0007] The luminous flux emitted by the high-frequency blue light chip is not lower than the luminous flux emitted by the low-frequency blue light chip.

[0008] The rated voltage of the LED chip may be one of 3V, 6V, 9V, 12V, 15V or 18V.

[0009] The size of the low-frequency blue light chip is greater than that of the high-frequency blue light chip.

[0010] The top of the fluorescent glue layer is arc-shaped, and the color of the fluorescent glue layer can be red or green.

[0011] The fluorescent glue layer is further divided into a first fluorescent glue layer and a second fluorescent glue layer.

[0012] The outer sealing adhesive layer is a transparent adhesive layer.

[0013] The packaging bracket includes a metal circuit board and a plastic packaging bracket. The shape of the plastic packaging bracket can be square, circular, triangular, elliptical, pentagonal, hexagonal, star-shaped or heart-shaped.

[0014] A polarity isolation belt is arranged on the metal circuit board.

[0015] After adopting the above technical solution, the beneficial effects of the utility model are:

[0016] Improve the overall brightness and uniformity, reduce power loss and improve energy efficiency, so that engineers can choose the driving power supply more flexibly, and improve the output driving ability of the LED chip; in addition, the series connection can also solve the consistency of dimming and color adjustment, and reduce the probability of lamp bead failure. At the same time, the dual blue light combination LED package is equipped with a fluorescent glue layer, which can also convert part of the blue light into other colors of light, increasing the richness of the spectrum and color expression; finally, the dual blue light combination LED package is equipped with an outer sealing glue layer, which is mainly to protect the LED chip from the influence of the external environment, improve stability and durability, extend service life, and play an anti-sulfurization role. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the packaging of the first dual blue light combination LED provided by the utility model;

[0020] Figure 3 This is a schematic diagram of the packaging of the second dual blue light combination LED provided by the utility model;

[0021] Figure 4 A schematic diagram of the packaging of a third dual blue light combination LED provided by the utility model;

[0022] Explanation of the accompanying drawings: 1. Packaging bracket; 11. Plastic packaging bracket; 12. Circuit board; 2. LED chip; 21. Low-frequency blue light chip; 22. High-frequency blue light chip; 3. Polarity isolation zone; 4. Fluorescent glue layer; 41. First fluorescent glue layer; 42. Second fluorescent glue layer; 5. Outer sealing glue layer. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Reference Figure 1-2 , a dual blue light combination LED package embodiment is proposed,

[0031] A dual blue light combination LED package includes a package support 1 and an LED chip 2 arranged in the package support 1, wherein the number of the LED chips 2 is two, a fluorescent glue layer 4 is arranged on the top of the LED chip 2, and an outer sealing glue layer 5 covering the LED chip 2 is arranged in the package support 1. The electrical connection between the LED chips 2 is in series, which can improve the overall brightness and uniformity to a certain extent, reduce power loss and improve energy efficiency, making the engineer more flexible in selecting the driving power supply scheme, and at the same time improving the output driving ability of the LED chip 2; the higher the voltage, the fewer the number of lamp beads on the light bar or light string at the same brightness; in addition, the series connection can also solve the consistency of dimming and color adjustment, and reduce the probability of lamp bead failure. The dual blue light combination LED package is provided with a fluorescent glue layer, which can also convert part of the blue light into other colors of light, increasing the richness of the spectrum and the color expression; finally, the dual blue light combination LED package is provided with an outer sealing glue layer, which mainly protects the LED chip from the influence of the external environment, improves stability and durability, prolongs the service life, and plays a role in preventing vulcanization.

[0032] Optionally, the LED chips 2 are respectively a low-frequency blue light chip 21 and a high-frequency blue light chip 22, the first fluorescent glue layer 41 is in contact with and connected to the low-frequency blue light chip 21, the second fluorescent glue layer 42 is in contact with and connected to the high-frequency blue light chip 22, the wavelength range of the low-frequency blue light chip 21 is 436-445nm, the wavelength range of the high-frequency blue light chip 22 is 457-465nm, and the luminous flux emitted by the high-frequency blue light chip 22 is not lower than the luminous flux emitted by the low-frequency blue light chip 21. Among them, the wavelength ranges of the low-frequency blue light chip 21 and the high-frequency blue light chip 22 correspond to relatively pure blue light, which is conducive to providing bright and clear lighting effects, and the wavelength ranges of the low-frequency blue light chip 21 and the high-frequency blue light chip 22 can effectively cover the human eye's perception range of blue light, making the energy distribution of light more balanced and improving the comfort of lighting; flexible color temperature adjustment: finally, through the combination of the low-frequency blue light chip 21 and the high-frequency blue light chip 22, a wider color temperature adjustment range can be achieved, and the switching from cold white light to warm white light is more flexible, which is suitable for different scenes and needs, thereby achieving full-spectrum LED applications.

[0033] Optionally, the rated voltage of the LED chip 2 may be one of 3V, 6V, 9V, 12V, 15V or 18V, and the size of the low-frequency blue light chip 21 is larger than that of the high-frequency blue light chip 22. The rated voltage of the LED chip 2 can be selected in a variety of ways, which can provide multiple advantages such as flexibility, matching, energy saving, environmental protection and safety, and is suitable for different lighting and display applications. At the same time, the size of the low-frequency blue light chip 21 is larger than that of the high-frequency blue light chip 22, which has the advantages of better heat dissipation performance, higher stability and stronger light output, and is suitable for applications with high requirements for lighting effects and long-term stability.

[0034] Optionally, the top of the fluorescent glue layer 4 is curved. The curved design can improve the refraction and reflection angles of light, improve the utilization rate of light, increase light efficiency, reduce the interference of reflection and refraction on light, and reduce the generation of glare. The curved design on the top can help the fluorescent glue layer 4 emit light more evenly, avoid the situation where the local brightness is too high or too low, and improve the overall lighting effect. And the color of the fluorescent glue layer 4 can be red or green. The fluorescent glue layer 4 is also divided into a first fluorescent glue layer 41 and a second fluorescent glue layer 42. The first fluorescent glue layer 41 and the second fluorescent glue layer 42 can use different fluorescent materials or formulas to achieve different light color effects, meet the user's needs for light color, and provide more choices. The outer sealing glue layer 5 is a transparent glue layer, which allows light to penetrate into the external environment more evenly, improving the lighting effect and brightness.

[0035] Optionally, a polarity isolation band 3 is provided on the metal circuit board 12, and the packaging bracket 1 includes a metal circuit board 12 and a plastic-encapsulated bracket 11. The plastic-encapsulated bracket 11 can be formed into a square shape. The square-structured plastic-encapsulated bracket 11 can be formed in one step by a mold, and the production efficiency is relatively high. It is also easier to adjust and align during the installation process, reducing the difficulty and time of installation. The polarity isolation band 3 is located in the center of the circuit board, and evenly separates the low-frequency blue light chip 21 and the high-frequency blue light chip 22. The polarity isolation band 3 evenly separates the low-frequency blue light chip 21 and the high-frequency blue light chip 22, which can effectively isolate signals and circuits of different frequencies, reduce the possibility of mutual interference, and improve the circuit stability and reliability of the entire lamp. The evenly distributed design is conducive to maintenance and overhaul, because the distance between different components is reasonable, and maintenance personnel can more conveniently contact and handle each component.

[0036] Reference Figure 3 , another dual blue light combination LED package embodiment is proposed:

[0037] The metal circuit board 12 is provided with a polarity isolation zone 3, the packaging bracket 1 includes the metal circuit board 12 and the plastic package bracket 11, the plastic package bracket 11 can be in a square shape, the polarity isolation zone 3 is located on the left side of the circuit board, the low-frequency blue light chip 21 is located on the side with a smaller area, and the high-frequency blue light chip 22 is located on the other side. Placing the low-frequency blue light chip 21 on the side with a smaller area can reduce the gap between it and the circuit board, and the heat dissipation effect is better. The high-frequency blue light chip 22 requires a larger heat dissipation space, so it is placed on the other side.

[0038] Reference Figure 4 , another dual blue light combination LED package embodiment is proposed:

[0039] Optionally, a polarity isolation zone 3 is provided on the metal circuit board 12, and the packaging bracket 1 includes the metal circuit board 12 and the plastic package bracket 11. The plastic package bracket 11 can be circular in shape. Compared with the square structure, the circular structure is less likely to be damaged when subjected to external impact, and can better protect the internal components from damage. The low-frequency blue light chip 21 and the high-frequency blue light chip 22 are both located on one side of the polarity isolation zone 3, which can make the layout of the entire circuit board more reasonable and facilitate the designer to assemble and wire the lamp.

[0040] Since the wavelengths excited by the phosphors currently on the market are concentrated in the middle of each color gamut and extend outward at both ends, but the wavelengths near the two endpoints are not very common, and the cost of firing customized phosphors used to excite special wavelengths is too high, the present invention utilizes the distinction between two different chips, a low-frequency blue light chip 21 and a high-frequency blue light chip 22, which include the wavelengths of the two end points of blue light. When R&D personnel need to modulate the colors of the wavelengths at both ends of the color gamut, they do not need to use phosphors with excitation wavelengths close to or at the wavelengths at both ends of the color gamut to achieve the same effect.

[0041] Continuing from the above, the principle of the present invention is: the low-frequency blue light chip 21 has a higher ability to excite phosphors than the high-frequency blue light chip 22. Through the ratio of different phosphors and the series electrical connection method, the dual blue light LED combination package can completely replace the three-color LED package to achieve full spectrum adjustment.

[0042] The above is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A dual blue light combination LED package, characterized in that: The invention comprises a packaging support (1) and an LED chip (2) arranged in the packaging support (1), wherein the number of the LED chips (2) is two, a fluorescent glue layer (4) is arranged on the top of the LED chip (2), an outer sealing glue layer (5) covering the LED chip (2) is arranged in the packaging support (1), and the LED chips (2) are electrically connected in series.

2. A dual blue light combination LED package according to claim 1, characterized in that: The LED chips (2) are respectively a low-frequency blue light chip (21) and a high-frequency blue light chip (22); the wavelength range of the low-frequency blue light chip (21) is 436-445 nm, and the wavelength range of the high-frequency blue light chip (22) is 457-465 nm.

3. A dual blue light combination LED package according to claim 2, characterized in that: The luminous flux emitted by the high-frequency blue light chip (22) is not lower than the luminous flux emitted by the low-frequency blue light chip (21).

4. A dual blue light combination LED package according to claim 2, characterized in that: The rated voltage of the LED chip (2) may be one of 3V, 6V, 9V, 12V, 15V or 18V.

5. The dual blue light combination LED package according to claim 2, characterized in that: The size of the low-frequency blue light chip (21) is larger than the size of the high-frequency blue light chip (22).

6. The dual blue light combination LED package according to claim 1, characterized in that: The top of the fluorescent glue layer (4) is arc-shaped, and the color of the fluorescent glue layer (4) can be red or green.

7. The dual blue light combination LED package according to claim 1, characterized in that: The fluorescent glue layer (4) is further divided into a first fluorescent glue layer (41) and a second fluorescent glue layer (42); the first fluorescent glue layer (41) is in contact with and connected to the low-frequency blue light chip (21), and the second fluorescent glue layer (42) is in contact with and connected to the high-frequency blue light chip (22).

8. The dual blue light combination LED package according to claim 1, characterized in that: The outer sealing adhesive layer (5) is a transparent adhesive layer.

9. The dual blue light combination LED package according to claim 1, characterized in that: The packaging support (1) comprises a metal circuit board (12) and a plastic packaging support (11); the shape of the plastic packaging support (11) may be square, circular, triangular, elliptical, pentagonal, hexagonal, star-shaped or heart-shaped.

10. A dual blue light combination LED package according to claim 9, characterized in that: A polarity isolation zone (3) is provided on the metal circuit board (12).

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