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CN-122028569-A - LED lamp bead top lens and manufacturing method thereof

CN122028569ACN 122028569 ACN122028569 ACN 122028569ACN-122028569-A

Abstract

The invention relates to the technical field of lamp bead top lens devices, in particular to an LED lamp bead top lens and a manufacturing method thereof, the LED lamp bead top lens comprises a lens plate, a square groove is formed in the top end of the lens plate, a round groove is formed in the inner side of the square groove, a lens is arranged in the square groove, an inner groove is formed in the bottom end of the lens plate, a bottom groove is formed in the bottom end of the inner groove, a lamp plate is arranged in the inner groove, a sealing plate is arranged in the bottom groove, a positioning hole is formed in the middle of the inner groove in a penetrating manner, the lens comprises an LED bracket, a sealing plate and a spherical surface arranged at the top end of the sealing plate, the positioning block is arranged in the round groove, the surface of the lens emission surface is smooth, dust is difficult to store, the cleaning is easy, a certain cleaning effect can be achieved under the flushing of natural wind and rain, manual cleaning operation is reduced, maintenance cost is reduced, the LED bracket of the sealing plate is fixedly connected with the spherical surface through adhesion, and the combined fixing effect is realized.

Inventors

  • LIU WEIZHONG
  • XIAO DIANYU

Assignees

  • 光博仕(丽水)医疗科技有限公司

Dates

Publication Date
20260512
Application Date
20250904

Claims (9)

  1. 1. The utility model provides a LED lamp pearl top lens, its characterized in that, including lens board (1), square groove (11) have been seted up on the top of lens board (1), circular groove (12) have been seted up to the inboard of square groove (11), be provided with lens (2) in square groove (11), inside groove (13) have been seted up to the bottom of lens board (1), kerve (14) have been seted up to the bottom of inside groove (13), be provided with lamp plate (5) in inside groove (13), be provided with in kerve (14) closing plate (6), locating hole (15) have been run through at the middle part of inside groove (13), including LED support (21), encapsulation board (22) and set up in sphere (23) on Feng Zhuangban (22) top in lens (2), the bottom of LED support (21) is fixed with the locating piece structure, and the locating piece sets up in circular groove (12).
  2. 2. The LED light bead top lens of claim 1, wherein said square grooves (11) and circular grooves (12) are arrayed in equidistant fashion on the lens plate (1).
  3. 3. The LED lamp bead top lens according to claim 1, wherein both sides of the top end of the lens plate (1) are fixed with lens group cable accommodation cavities (3).
  4. 4. The LED lamp bead top lens according to claim 1, wherein the outer sides of the sealing plate (6) and the lens plate (1) are provided with connecting holes (61), and the sealing plate (6) and the lens plate (1) are fixedly connected through the two groups of connecting holes (61) by locking bolts (16).
  5. 5. The LED lamp bead top lens according to claim 4, wherein a plurality of groups of hooks (4) are fixed on the outer side of the lens plate (1), the hooks (4) are hollow structures, and the bottom ends of the hooks are provided with hooking parts.
  6. 6. The LED lamp bead top lens according to claim 1, wherein the middle of the top end of the LED support (21) is provided with a slot (21), both sides of the package board (22) are fixed with hooking boards, and the spherical surface (23) is fixed on the top end of Feng Zhuangban (22) by bonding.
  7. 7. The LED lamp bead top lens according to claim 1, wherein the LED support (21) is fixed in the square groove (11) by bonding.
  8. 8. The manufacturing method of the LED lamp bead top lens comprises any one of the LED lamp bead top lenses in claims 1-7, and is characterized by comprising the following steps: S1, firstly, preparing raw materials for manufacturing lenses, wherein the raw materials comprise methyl acrylate, polycarbonate and fluorescent powder, and the three materials are mixed according to the proportion of the specified components; s2, manufacturing a die of the lens according to the design requirement of the lens, and precisely machining by using a numerical control machine tool to ensure the accuracy of the size and the shape of the die; S3, injection molding, mold cooling and demolding, namely after the raw materials are melted by heating, injecting the raw materials into a mold, and performing injection molding by a high-pressure injection molding machine, wherein after the injection molding, a period of time is needed to wait for cooling and solidifying the lens in the mold, and then the lens is taken out of the mold to finish the demolding operation. S5, trimming the demolded lens, removing redundant materials by using a cutting tool, and smoothing the surface of the lens through grinding and polishing operations; s6, covering the film layer, wherein special treatment can be performed on the surface of the lens to further improve the optical performance of the lens, so as to reduce the reflectivity and the scattering rate of the lens and improve the light transmittance; and S7, die bonding, namely bonding a plurality of LED chips on the substrate through the die bonding layer, so as to realize the electric connection between the lower electrodes of the LED chips and the substrate. S8, wire bonding is performed, and the electrode on the LED chip is electrically connected with the circuit of the substrate through the wire.
  9. 9. The method of manufacturing a top lens for an LED lamp bead according to claim 8, wherein the phosphor powder in the raw material of the optical lens in S1 is configured as required, and the principle is that ① determines the wavelength of the blue light chip according to a certain color temperature segment or a certain X, Y coordinate point, and the wavelength point of the blue light chip is connected with two points x and y of coordinate points to be reached in a straight line on a CIE chart and is extended to an upper CIE wavelength point, and finally, the wavelength extended point is the luminescence wavelength of the phosphor powder to be used, so that the phosphor powder with the wavelength is determined; then ② more than two kinds of fluorescent powder are needed to be blended, such as red powder and green powder, and the needed target fluorescent powder wavelength can be obtained according to the superposition color mixing principle of the red powder and the green powder and the light; Then ③, obtaining the required wavelength of the fluorescent powder by comparing the target fluorescent powder wavelength of the contrast color coordinates with the target color rendering index requirement and the appropriate proportion of the red and green powder; And finally ④, determining the proper red and green powder, and after determining the proportion of the target fluorescent powder, if the coordinate point of the product still deviates from the required coordinate point, adjusting the proportion of silica gel and fluorescent powder (namely red powder and green powder) according to the fact that the color coordinate of the product is basically on the same straight line with the color coordinate point of the product, the wavelength point of the blue light chip and the wavelength point of the target fluorescent powder on CIE, increasing the concentration of the fluorescent powder when the color coordinate is lower than the target coordinate, and reducing the concentration of the fluorescent powder when the color coordinate is higher than the target coordinate.

Description

LED lamp bead top lens and manufacturing method thereof Technical Field The invention relates to the technical field of lamp bead top lens devices, in particular to an LED lamp bead top lens and a manufacturing method thereof. Background The red wafer, the green wafer and the blue wafer are arranged in the RGB lamp bead, when the three wafers emit light and are mixed to form white light, lenses are required to be installed in common lamps, the LED lenses are closely connected with LEDs to improve the service efficiency and the luminous efficiency of the light, different lenses can be used for changing the optical system of the light field distribution of the LEDs according to different effects, and the LED lamp bead is a novel light source based on a 2835 lamp bead bracket and is mainly used for development and application of visual light sources. The traditional LED packaging process comprises the following steps of die bonding, wire bonding, fluorescent powder coating, curing, capping, glue filling, BIN selecting, solder paste printing, LED element pasting, reflow soldering and detection. In the process, the proportion of raw materials is adjusted in the process related to the fluorescent powder coating, the purpose of specified requirements is achieved, the steps in the actual operation are more, and the practicability is poor. Disclosure of Invention Technical problem to be solved Aiming at the defects existing in the prior art, the invention provides the LED lamp bead top lens and the manufacturing method thereof, wherein the color coordinates of the product, the color coordinate point of a blue light chip and the wavelength point of a target fluorescent powder are basically on the same straight line when the fluorescent powder is observed on CIE, the proportion of silica gel to the fluorescent powder is adjusted, the required full-spectrum red light gain fluorescent powder can be quickly adjusted, the LED lamp bead top lens is suitable for the lamp beads with 15-degree feet, and the problem that the fluorescent powder is difficult to adjust individually in the prior art can be effectively solved. Technical proposal In order to achieve the above purpose, the invention is realized by the following technical scheme: The invention provides an LED lamp bead top lens which comprises a lens plate, wherein a square groove is formed in the top end of the lens plate, a round groove is formed in the inner side of the square groove, a lens is arranged in the square groove, an inner groove is formed in the bottom end of the lens plate, a bottom groove is formed in the bottom end of the inner groove, a lamp plate is arranged in the inner groove, a sealing plate is arranged in the bottom groove, a positioning hole is formed in the middle of the inner groove in a penetrating mode, the lens comprises an LED support, a packaging plate and a spherical surface arranged at the top end of the packaging plate, a positioning block structure is fixed at the bottom end of the LED support, and a positioning block is arranged in the round groove. Further, the square groove and the round groove are formed in a plurality of groups on the lens plate in an equidistant array. Further, lens group cable accommodation cavities are fixed on two sides of the top end of the lens plate. Further, the outside of closing plate and lens board has all seted up the connecting hole, pass through two sets of connecting hole fixed connection through the lock bolt between closing plate and the lens board. Further, a plurality of groups of hooks are fixed on the outer side of the lens plate, the hooks are of hollow structures, and the bottom ends of the hooks are provided with hooking parts. Further, a slot is formed in the middle of the top end of the LED bracket, hooking plates are fixed on two sides of the packaging plate, and the spherical surface is fixed on the top end of the packaging plate through bonding. Further, the LED support is fixed in the square groove through bonding. The manufacturing method of the LED lamp bead top lens comprises the following steps of: S1, firstly, preparing raw materials for manufacturing lenses, wherein the raw materials comprise methyl acrylate, polycarbonate and fluorescent powder, and the three materials are mixed according to the proportion of the specified components; s2, manufacturing a die of the lens according to the design requirement of the lens, and precisely machining by using a numerical control machine tool to ensure the accuracy of the size and the shape of the die; S3, injection molding, mold cooling and demolding, namely after the raw materials are melted by heating, injecting the raw materials into a mold, and performing injection molding by a high-pressure injection molding machine, wherein after the injection molding, a period of time is needed to wait for cooling and solidifying the lens in the mold, and then the lens is taken out of the mold to finish the demolding operation. S5, trimming th