A fishery lighting LED light source and a preparation method thereof

Abstract

The application relates to a fishery lighting LED light source, which comprises a support, a first blue light LED chip, a second blue light LED chip, a bonding wire and fluorescent glue, a bowl cup is arranged on the support; the first blue light LED chip and the second blue light LED chip are arranged at the bottom of the bowl cup and are connected in series, wherein the first blue light LED chip is connected with a conductive part one through the bonding wire, and the second blue light LED chip is connected with a conductive part two through the bonding wire; the bowl cup is filled with the fluorescent glue, the fluorescent glue covers the whole functional area, the first blue light LED chip, the second blue light LED chip and all the bonding wires; the fluorescent glue comprises silicon A glue, silicon B glue, green fluorescent powder, yellow-green fluorescent powder and red fluorescent powder; the fishery lighting LED light source is prepared through the blue light chip and specific fluorescent powder, a double-wave-peak spectrum with good continuity is formed, the peak spectrum band has high sensitivity to the cone cells of marine fishes, has strong penetration in seawater and has good gathering effect on the marine fishes.

Description

Technical Field

[0001] This invention relates to the field of LED light source technology, and in particular to an LED light source for fishery lighting and its preparation method. Background Technology

[0002] LED fish attractors offer significant advantages over metal halide tungsten lamps. In terms of energy consumption, a 300W LED fish attractor can replace a 1000W metal halide tungsten lamp, reducing energy consumption by over 70%, significantly saving energy and lowering operating costs. Its light emission responds extremely quickly to current, allowing for rapid adjustment of light intensity, frequency, and color to suit different environments and fish species. LED chips emit specific wavelengths of light, better simulating natural light environments and increasing fish activity. Furthermore, multi-color LED combinations enable more precise spectral control, meeting the phototactic requirements of different fish species and providing some fish species selection functionality. In addition, LED fish attractors utilize solid-state packaging, resulting in high mechanical strength, excellent waterproof, corrosion-resistant, and impact-resistant properties, making them suitable for various marine and freshwater environments. Their long service life, typically reaching tens of thousands of hours, significantly reduces maintenance costs.

[0003] Current fish-attracting lights sometimes use traditional white LEDs. However, the wavelengths at which fish cone cells are most sensitive to light are in the blue-green range of 450-550nm. Ordinary white LEDs do not have a high percentage of this wavelength range. Furthermore, ordinary white LEDs experience significant attenuation and poor penetration in seawater, making it difficult to achieve a good attracting effect. Other methods use multiple blue, green, or yellow-green LEDs assembled on a PCB board. In underwater lights with limited luminous area, the number of LEDs that a PCB board can accommodate is limited. Lights using this method have low power density, discontinuous spectra, and poor luminous efficiency, making them uneconomical for deep-sea fishing vessels that primarily rely on fuel-powered electricity. Summary of the Invention

[0004] To address the aforementioned problems, this invention discloses an LED light source for fishery lighting and its preparation method. It employs a specific wavelength blue light chip and a multi-band phosphor system, thus solving the problems of poor water penetration, discontinuous spectrum, and poor luminous efficiency in existing fishery lighting sources.

[0005] The specific technical solution is as follows: A fishery lighting LED light source includes a bracket, a first blue LED chip, a second blue LED chip, bonding wires, and fluorescent adhesive. The bracket has a bowl-shaped cup with a functional area at its bottom. The functional area includes a first conductive part, a second conductive part, and an insulating part. The first conductive part and the second conductive part are insulated and separated by an insulating part located at the center of the bowl-shaped cup. The first and second blue LED chips are both disposed at the bottom of the bowl-shaped cup and connected in series. The first blue LED chip is connected to the first conductive part via bonding wires, and the second blue LED chip is connected to the second conductive part via bonding wires. The bowl is filled with fluorescent adhesive, which covers the entire functional area, the first blue LED chip, the second blue LED chip, and all bonding wires. The fluorescent adhesive comprises silicone A adhesive, silicone B adhesive, green phosphor, yellow-green phosphor, and red phosphor. The mass percentage of silicone A adhesive is 13.3%~16.8%, the mass percentage of silicone B adhesive is 55.8%~74.3%, the mass percentage of green phosphor is 5.6%~7.9%, the mass percentage of yellow-green phosphor is 10.3%~13.4%, and the mass percentage of red phosphor is 1.7%~3.0%. The peak wavelength of the green phosphor is 525 nm, the peak wavelength of the yellow-green phosphor is 550 nm, and the peak wavelength of the red phosphor is 630 nm.

[0006] Furthermore, the main component of the green phosphor is aluminate, the main component of the yellow-green phosphor is nitrogen oxide, and the main component of the red phosphor is silicate.

[0007] Furthermore, the peak wavelengths of both the first and second blue LED chips are 450nm.

[0008] Furthermore, the peak light power of both the first and second blue LED chips is 75-80mW, and the area ratio of the first and second blue LED chips is 1:1.

[0009] Furthermore, the first blue LED chip and the second blue LED chip are fixed to the bottom of the bowl / cup using die-attach adhesive.

[0010] Furthermore, the bottom of the bracket is provided with two tin-plated metal electrodes, and the two conductive parts are electrically connected to the two metal electrodes respectively. The metal electrodes are used for surface mounting.

[0011] Furthermore, the positive electrode of the first blue LED chip is connected to the first conductive part via a bonding wire, the negative electrode of the second blue LED chip is connected to the second conductive part via a bonding wire, and the negative electrode of the first blue LED chip and the positive electrode of the second blue LED chip are electrically connected via bonding wires.

[0012] A method for preparing an LED light source for fishery lighting includes the following steps: Step 1: Apply die-bonding adhesive to the center of the functional area at the bottom of the cup of the bracket, and accurately place the first blue LED chip and the second blue LED chip on the die-bonding adhesive; Step 2: Place the die-bonded support into a constant temperature chamber for curing, so that the first blue LED chip and the second blue LED chip are firmly connected to the bottom of the bowl. Step 3: Use wire bonding technology to achieve electrical connections between each chip electrode and its corresponding conductive part, as well as between two chip electrodes, through bonding wires; Step 4: Weigh out silicone A glue, silicone B glue, green phosphor, yellow-green phosphor and red phosphor according to the above proportions, mix and stir evenly to obtain fluorescent glue, and vacuum the fluorescent glue to remove air bubbles. Step 5: Apply the prepared fluorescent adhesive to the inside of the bowl, ensuring that the fluorescent adhesive completely covers the functional area, the first blue LED chip, the second blue LED chip, and all bonding wires; Step Six: Place the dispensing-completed bracket into a constant temperature chamber for segmented curing; Step 7: After curing, the photoelectric parameters of the light source are tested. If the test is qualified, the fishery lighting LED light source is obtained.

[0013] Furthermore, in step two, the curing temperature of the constant temperature chamber is 150℃, and the curing time is 120 minutes.

[0014] Furthermore, in step six, the parameters for segmented curing are as follows: first, cure at 100°C for 30 minutes, then at 130°C for 60 minutes, and finally at 150°C for 180 minutes.

[0015] The beneficial effects of this invention are reflected in: The LED light source for fishery lighting of this invention has good spectral continuity, covering the visible light band of 380-780nm, avoiding the splicing and spectral breakage defects of existing multi-color LED assembled light sources, and can output uniform and uninterrupted fish-attracting light, avoiding the attraction blind zone caused by the lack of energy in local bands.

[0016] The luminous efficacy of the LED light source for fishery lighting in this invention is as high as 140Lm / W, with good energy-saving effect, significantly reducing fuel consumption and operating costs in deep-sea fishing.

[0017] The peak wavelengths of the LED light source for fishery lighting in this invention are 450nm and 520nm. The light has low attenuation in water and strong penetration. At the same time, the peak wavelengths are highly sensitive to the cone cells of fish, resulting in a good attraction effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the LED light source for fishery lighting of the present invention.

[0019] Figure 2 This is a side sectional view of the present invention.

[0020] Figure 3 This is a spectral distribution diagram of the LED light source for fishery lighting of the present invention.

[0021] Figure 4 This is a photoelectric parameter test report of the LED light source for fishery lighting of this invention.

[0022] Explanation of reference numerals in the attached drawings: 1-bracket, 2-first LED chip, 3-second LED chip, 4-bonding wire, 5-phosphor adhesive, 6-insulating part, 7-conductive part one, 8-conductive part two. Detailed Implementation

[0023] To make the technical solution of the present invention clearer and more explicit, the present invention will be further described below with reference to the accompanying drawings. Any solution derived by equivalent substitution and conventional reasoning of the technical features of the present invention falls within the protection scope of the present invention.

[0024] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0025] Example 1

[0026] Please see the appendix Figure 1-4 This embodiment provides an LED light source for fishery lighting, comprising a bracket 1, a first LED chip 2, a second LED chip 3, bonding wires 4, and fluorescent adhesive 5. A bowl-shaped cup is mounted on the bracket 1, and a functional area is located at the bottom of the bowl-shaped cup. This functional area includes two conductive portions with silver-plated surfaces and an insulating portion 6. The conductive portions include conductive portion one 7 and conductive portion two 8. The two conductive portions are insulated from each other by the insulating portion 6 located at the center of the bowl-shaped cup. The silver plating improves the reflectivity and conductivity of the conductive portions, reducing light loss.

[0027] The first blue LED chip 2 and the second blue LED chip 3 are respectively fixed to the bottom of the bowl / cup using die-attach adhesive. In this embodiment, the first blue LED chip has a peak wavelength of 450nm, a size of 9*18mil, and a peak optical power of 75-80mW; the second blue LED chip also has a peak wavelength of 450nm, a size of 9*18mil, and a peak optical power of 75-80mW. The chip area ratio of the first blue LED chip to the second blue LED chip is 1:1.

[0028] Electrical connection is achieved using wire bonding: the positive electrode of the first blue LED chip 2 is connected to the conductive part 7 via bonding wire 4; the negative electrode of the second blue LED chip 3 is connected to the conductive part 8 via bonding wire 4; the negative electrode of the first blue LED chip 2 and the positive electrode of the second blue LED chip 3 are connected to each other via bonding wire, thereby realizing the series connection of the two chips.

[0029] The bottom of the bracket 1 has two tin-plated metal electrodes for surface mounting. Two conductive parts are electrically connected to these two metal electrodes respectively.

[0030] The bowl is filled with fluorescent adhesive 5, which covers the entire functional area, the first blue LED chip 2, the second blue LED chip 3, and all bonding wires 4. The fluorescent adhesive 5 comprises silicone A adhesive, silicone B adhesive, green phosphor, yellow-green phosphor, and red phosphor. The mass percentage of silicone A adhesive is 13.3%~16.8%, the mass percentage of silicone B adhesive is 55.8%~74.3%, the mass percentage of green phosphor is 5.6%~7.9%, the mass percentage of yellow-green phosphor is 10.3%~13.4%, and the mass percentage of red phosphor is 1.7%~3.0%.

[0031] Among them, silicone A is the main agent and silicone B is the catalyst; the peak wavelength of the green phosphor is 525nm and its main component is aluminate; the peak wavelength of the yellow-green phosphor is 550nm and its main component is nitrogen oxide; and the peak wavelength of the red phosphor is 630nm and its main component is silicate.

[0032] The following are three specific examples: Example 1

[0033] The fluorescent adhesive 5 comprises silicone A adhesive, silicone B adhesive, green phosphor, yellow-green phosphor, and red phosphor. In this fluorescent adhesive, silicone A adhesive accounts for 13.3% by mass, silicone B adhesive accounts for 55.8% by mass, green phosphor accounts for 5.6% by mass, yellow-green phosphor accounts for 10.3% by mass, and red phosphor accounts for 1.7% by mass. The light color performance of the LED light source for fishery lighting in this embodiment is as follows: Figure 4 As shown.

[0034] Example 2

[0035] The fluorescent adhesive 5 comprises silicone A adhesive, silicone B adhesive, green phosphor, yellow-green phosphor, and red phosphor. In this fluorescent adhesive, silicone A adhesive accounts for 15.1% by mass, silicone B adhesive accounts for 65.1% by mass, green phosphor accounts for 6.8% by mass, yellow-green phosphor accounts for 11.9% by mass, and red phosphor accounts for 2.4% by mass. The light color performance of the LED light source for fishery lighting in this embodiment is as follows: Figure 4 As shown.

[0036] Example 3

[0037] The fluorescent adhesive 5 comprises silicone A adhesive, silicone B adhesive, green phosphor, yellow-green phosphor, and red phosphor. In this fluorescent adhesive, silicone A adhesive accounts for 16.8% by mass, silicone B adhesive accounts for 74.3% by mass, green phosphor accounts for 7.9% by mass, yellow-green phosphor accounts for 13.4% by mass, and red phosphor accounts for 3.0% by mass. The light color performance of the LED light source for fishery lighting in this embodiment is as follows: Figure 4 As shown.

[0038] This embodiment also provides a method for preparing an LED light source for fishery lighting, including the following steps: Step 1: Apply die-bonding adhesive to the center of the functional area at the bottom of the bowl of bracket 1, and accurately place the first blue LED chip 2 and the second blue LED chip 3 on the die-bonding adhesive; Step 2: Place the die-bonded support 1 into a constant temperature oven for curing, so that the first blue LED chip 2 and the second blue LED chip 3 are firmly connected to the bottom of the bowl. The curing temperature is 150℃ and the curing time is 120 minutes. Step 3: Using a fully automatic wire bonding machine, bonding wire 4 is used to achieve electrical connections between each chip electrode and its corresponding conductive part, as well as between the electrodes of two chips; Step 4: Weigh out silicone A glue, silicone B glue, green phosphor, yellow-green phosphor and red phosphor according to the above proportions, mix and stir evenly to obtain fluorescent glue, and vacuum the fluorescent glue to remove air bubbles. Step 5: Apply the prepared fluorescent adhesive to the inside of the bowl, so that the fluorescent adhesive 5 completely covers the functional area, the first blue LED chip 2, the second blue LED chip 3, and all bonding wires 4; Step 6: Place the dispensing bracket 1 into a constant temperature chamber for segmented curing. The parameters for segmented curing are: first, cure at 100℃ for 30 minutes, then at 130℃ for 60 minutes, and finally at 150℃ for 180 minutes. Segmented curing can prevent the fluorescent adhesive from cracking due to excessive temperature rise, and ensure the sealing performance and light conversion performance of the encapsulation. Step 7: After curing, the photoelectric parameters of the light source are tested. If the test is qualified, the fishery lighting LED light source is obtained.

[0039] Figure 4 This is a photoelectric parameter test report of an embodiment of this application. From Figure 4 The report shows that: 1. The light source of this invention has a color temperature of 13370K, chromaticity coordinates x=0.2201, y=0.3320, color deviation duv=0.00568, and pure light color, close to natural light; 2. The light source has a luminous efficacy of up to 143.82 lm / W and a luminous flux of 67.93 lm, which is much higher than the luminous efficacy of ordinary white LED (<100 lm / W) and multi-color LED assembly (<80 lm / W). The invention has excellent energy conversion efficiency and significant energy-saving effect. In the scenario of fuel power generation on ocean fishing vessels, the high luminous efficiency directly reduces fuel consumption and operating costs, and has significant economic advantages. 3. Electrical parameters show low voltage and low power consumption: forward voltage Vf=3.140V, forward current If=150.3mA, power P=472.3mW, stable operation and high energy efficiency; 4. The peak wavelength is 450.1 nm, the half-width is 19.1 nm, the color purity is 38.4%, and the energy spectrum of each wavelength in the spectrum is uniformly distributed.

[0040] 5. LED light sources have good spectral continuity, covering the visible light band of 380-780nm, avoiding the spectral splicing defects caused by multi-color LED assembly in existing technologies, and ensuring the uniformity and effectiveness of fish-attracting light.

[0041] 6. The spectral curves in the figure show that the peak wavelength of the light source is 450.1 nm, and the dominant wavelength is 491.6 nm, both falling within the 450-550 nm blue-green band, which is most sensitive to fish cone cells. This peak wavelength has high sensitivity to fish cone cells and a good attraction effect. The relative light intensity in the 450-550 nm blue-green band is close to 1.0, and its energy proportion is much higher than that of ordinary white LEDs. Seawater has the least absorption and attenuation of blue-green light; therefore, this light source has a better penetration depth and effective attraction range in water than traditional light sources.

[0042] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A type of LED light source for fishery lighting, characterized in that, The device includes a support, a first blue LED chip, a second blue LED chip, bonding wires, and fluorescent adhesive. A bowl is mounted on the support, and a functional area is located at the bottom of the bowl. The functional area includes a first conductive part, a second conductive part, and an insulating part. The first conductive part and the second conductive part are insulated and separated by an insulating part located at the center of the bowl. The first and second blue LED chips are both disposed at the bottom of the bowl and connected in series. The first blue LED chip is connected to the first conductive part via bonding wires, and the second blue LED chip is connected to the second conductive part via bonding wires. The bowl is filled with fluorescent adhesive, which covers the entire functional area, the first blue LED chip, the second blue LED chip, and all bonding wires. The fluorescent adhesive comprises silicone A adhesive, silicone B adhesive, green phosphor, yellow-green phosphor, and red phosphor. The mass percentage of silicone A adhesive is 13.3%~16.8%, the mass percentage of silicone B adhesive is 55.8%~74.3%, the mass percentage of green phosphor is 5.6%~7.9%, the mass percentage of yellow-green phosphor is 10.3%~13.4%, and the mass percentage of red phosphor is 1.7%~3.0%. The peak wavelength of the green phosphor is 525 nm, the peak wavelength of the yellow-green phosphor is 550 nm, and the peak wavelength of the red phosphor is 630 nm.

2. The LED light source for fishery lighting as described in claim 1, characterized in that, The main component of the green phosphor is aluminate, the main component of the yellow-green phosphor is nitrogen oxide, and the main component of the red phosphor is silicate.

3. The LED light source for fishery lighting as described in claim 1, characterized in that, The peak wavelength of both the first and second blue LED chips is 450nm.

4. The LED light source for fishery lighting as described in claim 3, characterized in that, The peak light power of the first blue LED chip and the second blue LED chip is 75-80mW, and the area ratio of the first blue LED chip and the second blue LED chip is 1:

1.

5. The LED light source for fishery lighting as described in claim 4, characterized in that, The first blue LED chip and the second blue LED chip are fixed to the bottom of the bowl / cup with die bond adhesive.

6. The LED light source for fishery lighting as described in claim 1, characterized in that, The bottom of the bracket is provided with two tin-plated metal electrodes, and the two conductive parts are electrically connected to the two metal electrodes respectively. The metal electrodes are used for surface mounting.

7. The LED light source for fishery lighting as described in claim 5, characterized in that, The positive electrode of the first blue LED chip is connected to a conductive part one via a bonding wire, and the negative electrode of the second blue LED chip is connected to a conductive part two via a bonding wire. The negative electrode of the first blue LED chip and the positive electrode of the second blue LED chip are electrically connected via bonding wires.

8. A method for preparing an LED light source for fishery lighting, comprising the following steps: Step 1: Apply die-bonding adhesive to the center of the functional area at the bottom of the cup of the bracket, and place the first blue LED chip and the second blue LED chip on the die-bonding adhesive respectively; Step 2: Place the die-bonded support into a constant temperature chamber for curing, so that the first blue LED chip and the second blue LED chip are firmly connected to the bottom of the bowl. Step 3: Use wire bonding technology to achieve electrical connections between each chip electrode and its corresponding conductive part, as well as between two chip electrodes, through bonding wires; Step 4: Weigh out silicone A glue, silicone B glue, green phosphor, yellow-green phosphor and red phosphor according to the proportion of fluorescent adhesive as described in any one of claims 1-5, mix and stir evenly to obtain fluorescent adhesive, and vacuum the fluorescent adhesive to remove air bubbles. Step 5: Apply the prepared fluorescent adhesive to the inside of the bowl, ensuring that the fluorescent adhesive completely covers the functional area, the first blue LED chip, the second blue LED chip, and all bonding wires; Step Six: Place the dispensing-completed bracket into a constant temperature chamber for segmented curing; Step 7: After curing, the photoelectric parameters of the light source are tested. If the test is qualified, the fishery lighting LED light source is obtained.

9. The method for preparing an LED light source for fishery lighting as described in claim 7, characterized in that, In step two, the curing temperature of the constant temperature chamber is 150℃, and the curing time is 120 minutes.

10. The method for preparing an LED light source for fishery lighting as described in claim 7, characterized in that, In step six, the parameters for segmented curing are as follows: first, cure at 100°C for 30 minutes, then at 130°C for 60 minutes, and finally at 150°C for 180 minutes.

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