CN117174809B - High-light-efficiency LED lamp bead and LED lighting device comprising same - Google Patents
High-light-efficiency LED lamp bead and LED lighting device comprising same Download PDFInfo
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- CN117174809B CN117174809B CN202311135101.5A CN202311135101A CN117174809B CN 117174809 B CN117174809 B CN 117174809B CN 202311135101 A CN202311135101 A CN 202311135101A CN 117174809 B CN117174809 B CN 117174809B
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- 239000011324 bead Substances 0.000 title claims abstract description 47
- 239000010410 layer Substances 0.000 claims abstract description 77
- 239000003822 epoxy resin Substances 0.000 claims abstract description 72
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 72
- 239000011248 coating agent Substances 0.000 claims abstract description 48
- 238000000576 coating method Methods 0.000 claims abstract description 48
- 239000000843 powder Substances 0.000 claims abstract description 47
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 239000012790 adhesive layer Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000002834 transmittance Methods 0.000 claims abstract description 9
- 239000003292 glue Substances 0.000 claims abstract description 8
- 108010043121 Green Fluorescent Proteins Proteins 0.000 claims abstract description 6
- 239000011521 glass Substances 0.000 claims abstract description 6
- 238000001556 precipitation Methods 0.000 claims abstract description 4
- 238000005507 spraying Methods 0.000 claims description 73
- 238000001816 cooling Methods 0.000 claims description 29
- 238000005553 drilling Methods 0.000 claims description 24
- 238000009423 ventilation Methods 0.000 claims description 20
- 230000007246 mechanism Effects 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 17
- 238000002955 isolation Methods 0.000 claims description 14
- 239000011241 protective layer Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 13
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- 238000004806 packaging method and process Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
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- 150000004767 nitrides Chemical class 0.000 description 2
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- 230000000630 rising effect Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 150000001169 Lutetium Chemical class 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical group [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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- 238000011049 filling Methods 0.000 description 1
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 1
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a high-light-efficiency LED lamp bead, which consists of a lamp cap, a lamp cup, an LED chip, a substrate and a bulb shell from bottom to top; the LED chip and the substrate are arranged in the lamp cup, and the LED chip is arranged on the substrate; the LED chip is provided with a fluorescent powder epoxy resin adhesive layer; red fluorescent powder and fluorescent powder mixed with green fluorescent powder are arranged in the fluorescent powder epoxy resin glue layer; the fluorescent powder epoxy resin adhesive layer on the LED chip is formed by centrifugal precipitation after spot coating by a spot coating sprayer. The invention also discloses an LED lighting device comprising the high-light-efficiency LED lamp bead, which consists of the high-light-efficiency LED lamp bead and a lamp shade covered outside the lamp bead, wherein the edge part outside the center of the lamp shade is higher in transparency than the center of the lamp shade, and the edge part of the lamp shade is made of an epoxy resin material with pressure resistance of more than or equal to 500V and light transmittance of 99 percent or a soft glass material with thickness of 1 mm; the color temperature of the light emitted by the LED lighting device is 5500K, and the light intensity is 4000lm. The invention can reduce the phenomenon of 'illumination heating', can increase the illuminance of the lamp and also improves the light efficiency.
Description
Technical Field
The invention relates to a high-light-efficiency LED lamp bead and an LED lighting device comprising the same.
Background
The LED lighting product has the remarkable advantages of high light efficiency, long service life, energy conservation, environmental protection and the like, and has very wide application prospect in the field of lighting. In recent years, the LED lighting industry has moved into a mature stage. Since 2016, the production and marketing scale of the LED lighting industry reaches 2550 hundred million yuan, and the LED lighting permeability is increased from 0,6% in 2010 to 42% in 2016. The first focus in evaluating the quality of LED lighting applications is energy efficiency.
Patent publication number CN115172562 a: the manufacturing method of the high-light-efficiency LED lamp bead comprises the following steps: s1: baking and cooling the bracket, conducting silver colloid on the middle position of the bowl cup bonding pad of the bracket, and arranging the LED chip at the position of the bracket for dispensing the silver colloid; s2: inspecting and baking the bracket; s3: according to the technical index requirements, the first packaging adhesive is dispensed into a bracket bowl, baking is carried out, and then the second packaging adhesive is dispensed into the bracket bowl; s4: defoaming, baking and cooling the lamp beads; s5: and coating nanometer protective films on the outer surfaces of the lamp bead colloid and the bracket, and finishing the manufacture. According to the manufacturing method of the LED lamp bead with high light efficiency, the secondary dispensing technology is adopted in the fluorescent dispensing part, the first packaging adhesive containing fluoride red powder is dispensed firstly in the secondary dispensing, and the second packaging adhesive containing nitride yellow-green powder is dispensed, so that the pearl effect of the manufactured lamp is improved. The pearlescent effect of the lamp is increased by the components and the manufacturing mode, but the mode is complex, and the effect of improving the light effect is common. Patent publication No. CN 212408379U: a high light efficiency LED lamp bead, comprising: the LED lamp comprises a substrate, wherein the substrate is provided with a mounting groove, a mounting flange is arranged in the mounting groove, inner pins are arranged on the mounting flange, and two lamp beads are arranged in the mounting flange; the wiring terminal is provided with an outer pin and is arranged in the mounting groove; the central lens is vertically arranged in the middle of the lamp beads; fluorescent glue filled in the mounting flange for fixing the lamp beads and the central lens; the light reflecting cup is provided with a light reflecting arc groove, an opening at the bottom end of the light reflecting arc groove is matched with the mounting flange, and the light reflecting cup is mounted in the mounting groove; the inner support, the inner support top is provided with the cooling cavity, the inner support is installed in the mounting groove. The light efficiency is increased by changing the structure of the lamp bead. However, no improvement of the lighting device is seen (because the light irradiated by the LED lamp beads on the inner wall of the lampshade can generate a phenomenon of 'illumination heating', and the phenomenon of 'illumination heating' can raise the working temperature of the lamp and reduce the light efficiency) to improve the light efficiency.
The LED light source is opposite to the thermoluminescent thermal light source, and the working temperature is actually the test stone for measuring the quality of the LED lamp, as known from the paper LED lamp pearlescent effect curve and the working life of the LED lamp published by the Goodon in the 11 th stage of 2022, 11 th month of Chinese lighting appliance. The LED lamp with high working temperature is a short-lived lamp with low light efficiency and high energy consumption; the LED lamp with low working temperature is a long-life lamp with high light efficiency and low energy consumption, so that the advantages of high light efficiency, long service life and low energy consumption of the LED light source are expected to be brought into play, and the working temperature of the LED lamp is reduced directly and effectively, so that the light efficiency can be effectively improved. For example, the heat dissipation condition is changed, and the working current and the luminous intensity of the LED lamp bead are not changed, but the working temperature of the lamp bead body is directly changed, and the forward voltage drop of the lamp bead is increased due to the reduction of the working temperature of the lamp bead, so that the extra heating loss of the lamp bead is reduced. The reduction of the heating coefficient of the lamp beads can effectively improve the light effect of the lamp beads.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the high-light-efficiency LED lamp bead, which can reduce or eliminate the phenomenon of illumination heating, not only can increase the illuminance of a lamp, but also can reduce the working temperature of the lamp by about 35 percent, thus improving the light efficiency. The LED chip is coated with epoxy resin in a spot mode and the epoxy resin is sprayed in the die to form the required edge part of the lampshade, and only one spraying head is needed to be additionally arranged, so that the edge part of the lampshade is formed by spraying the LED chip in a spot mode, working hours are reduced, and working efficiency is improved.
In order to achieve the above purpose, the technical scheme of the invention is to design a high-light-efficiency LED lamp bead, which consists of a lamp cap, a lamp cup, an LED chip, a substrate and a bulb shell from bottom to top; the LED chip and the substrate are arranged in the lamp cup, and the LED chip is arranged on the substrate; the LED chip is provided with a fluorescent powder epoxy resin adhesive layer;
Red fluorescent powder and fluorescent powder mixed with green fluorescent powder are arranged in the fluorescent powder epoxy resin glue layer; the fluorescent powder epoxy resin adhesive layer on the LED chip is formed by centrifugal precipitation after spot coating by a spot coating sprayer. Besides fluorescent powder, namely epoxy resin and silica gel, the mass ratio of the epoxy resin to the silica gel is 8:30-35, dispersing fluorescent powder in a mixture of epoxy resin and silica gel; the mass ratio of the red fluorescent powder to the green fluorescent powder is 1:1.0-1.5; the red fluorescent powder can be silicon-based nitride red fluorescent powder, and the green fluorescent powder can be silicate fluorescent powder which is formed by mixing lutetium salt fluorescent powder and gallate fluorescent powder according to the mass ratio of 4.9-5.3:1 and the mass of which is 5-10% of the total mass of the mixed fluorescent powder. The high luminous efficiency of the lamp beads is realized through the specific selection of the fluorescent powder in the epoxy resin mixed glue and the preparation process of the epoxy resin glue layer on the LED chip. The LED chip is coated with epoxy resin in a spot mode and the epoxy resin is sprayed in the die to form the required edge part of the lampshade, and only one spraying head is needed to be additionally arranged, so that the edge part of the lampshade is formed by spraying the LED chip in a spot mode, working hours are reduced, and working efficiency is improved.
The further technical scheme is that the spot coating spraying machine is used for spot coating fluorescent powder epoxy resin glue layers on the LED chips and intermittently spraying a lampshade in an LE D lighting device comprising the high-luminous-efficiency LED lamp beads in a die; the spot coating spraying machine comprises a spot coating head and a spraying head which are arranged on an actuating part of a frame of the spot coating spraying machine, and a space is arranged between the spraying head and the spot coating head; when the spot-coating spraying machine works, the opening of the proportional valve on the rubber pipe connected with the spot-coating head is smaller than that of the proportional valve on the rubber pipe connected with the spraying head;
The fluorescent powder epoxy resin adhesive layer is provided with a plurality of holes for light diffuse reflection. Because the spot coating is an intermittent process, intermittent operation is also carried out on the additionally arranged spray head, the arrangement is convenient to control, and the opening degree of the proportional valve on the rubber pipe connected with the spray head is larger than that of the proportional valve on the rubber pipe connected with the spot coating head, so that the quantity of sprayed epoxy resin can be ensured to be enough to fill the flexible mould so as to obtain a required lampshade. The dispensing head and the spraying head are fixedly arranged on the actuating part of the frame of the dispensing spraying machine, so that the spraying head sprays epoxy resin into the die right below the spraying head when the dispensing head dispenses, and the die matched with the lamp shade is quite larger than the LED chips in size, so that the spraying head is still above the die even if the spraying head moves along with the actuating part when the plurality of LED chips are dispensed, in addition, the dispensing area of the dispensing head can be arranged to be almost or consistent with the size of the surface area of the die (of course, the dispensing area is arranged at the position beside the die), and the epoxy resin spraying (filling) of one die is finished after the dispensing of one batch of LED chips is finished.
The invention also provides a technical scheme that the LED lighting device comprising the high-light-efficiency LED lamp bead comprises the high-light-efficiency LED lamp bead and a lamp shade covered outside the lamp bead, wherein the edge part outside the center of the lamp shade is higher in transparency than the center of the lamp shade, and the edge part of the lamp shade is made of an epoxy resin material with pressure resistance of more than or equal to 500V and light transmittance of 99% or a soft glass material with thickness of 1 mm; the color temperature of the light emitted by the LED lighting device is 5500K, and the light intensity is 4000lm. The light color temperature emitted by the LED lighting device reaches 5500K, the light intensity is about 4000lm, and the light efficiency (the luminous power/the power supply power of the lamp bead) of the lamp is about 75%. The lamp shade is made of transparent materials (epoxy resin or 1mm thick soft glass is adopted (withstand voltage is more than or equal to 500V, and light transmittance is about 99%), especially the edge of the lamp shade (the light transmittance of the edge of the lamp shade is higher than that of the center of the lamp shade), on one hand, the phenomenon of 'illumination heating' can be reduced (the light of the LED lamp beads irradiated on the inner wall of the lamp shade is different in temperature difference under tree shade and sunlight exposure), the phenomenon of 'illumination heating' is reduced or eliminated, the illuminance of the lamp can be increased, the working temperature of the lamp can be reduced by about 35%, and thus the light efficiency can be improved, the heat generated by the LED lamp beads irradiated on the inner wall of the lamp shade is the heat energy generated by 'illumination heating' in the lamp shade, one of the solutions is that the light transmittance of the lamp shade is improved, and in addition, the illumination area facing the edge of the lamp shade is farther, the illumination difference is avoided, the illumination difference existing under the LED lamp is not bright enough, and the difference is reduced to a certain extent, and the difference is set up.
The further technical scheme is that the lamp shade consists of an inner-layer lamp shade and an outer-layer lamp shade, wherein the inner-layer lamp shade and the outer-layer lamp shade are respectively provided with cooling ventilation holes, and the cooling ventilation holes on the inner-layer lamp shade and the outer-layer lamp shade are arranged in a staggered manner. The double-layer lamp shade is provided with cooling ventilation holes, and ventilation holes on the two layers are arranged in a staggered manner; on one hand, the dazzling, the unsmooth and the temperature rising sense under the lighting device caused by direct light irradiation are avoided (as the direct and effective method for improving the light efficiency is to reduce the working temperature of the lighting device, the forward pressure drop of the lighting device is increased due to the reduction of the working temperature of the lighting device, so that the extra heating loss of the lighting device is reduced; on the other hand, the lamp shade is protected from sundries entering the worn lamp beads. In addition, a filter screen can be arranged on the ventilation holes on the outermost layer to prevent dust from entering the lighting device.
The other technical proposal is that the surface of the lampshade is provided with an epoxy resin isolation protective layer with pressure resistance not less than 500V and light transmittance of 99 percent; the lamp shade and the isolation protective layer are respectively provided with a cooling ventilation hole, and the cooling ventilation holes on the lamp shade and the isolation protective layer are communicated; the cooling air holes on the lampshade and the isolation protective layer are obliquely arranged with the thickness direction of the lampshade or the thickness direction of the isolation protective layer. Directly form the isolation protection layer at the epoxy of lamp shade surface spraying high transparency after the stoving, set up the cooling bleeder vent that is linked together simultaneously on lamp shade and isolation protection layer, the cooling bleeder vent on both is the slope of different directions and sets up, has guaranteed the heat dissipation on the one hand, has reduced lamp pearl heating coefficient and has made the light efficiency of lamp pearl effectively promote, on the other hand the setting of the cooling bleeder vent that is linked together like this can effectively avoid impurity (have impurity of certain weight and great particle diameter) etc. entering lighting device inside.
The further technical scheme is that the edge part outside the center of the lampshade is formed by intermittently spraying epoxy resin in a flexible forming die and then drying the epoxy resin while the LED chip is coated by a point coating sprayer; the spot coating spraying machine consists of a frame-shaped frame, a triaxial transmission mechanism on the frame, an actuating part on the triaxial transmission mechanism, a spot coating head and a spraying head which are fixedly arranged on the actuating part, wherein the actuating part is a sliding plate which slides relative to the Z axis of the triaxial transmission mechanism;
The dispensing head and the spraying head are respectively connected with the epoxy resin tank through a rubber pipe, fluorescent powder is mixed in epoxy resin in the epoxy resin tank connected with the dispensing head, two proportional valves are arranged on the rubber pipe connected with the spraying head, and a proportional valve is arranged on the rubber pipe connected with the dispensing head. Two proportional valves are arranged on the rubber tube of the spraying head, one of the proportional valves is opened to the maximum when spraying in the flexible forming die to form the edge part of the lampshade, and a passage is formed; the edge part of the lamp shade and the central part of the lamp shade are spread to a certain degree when being spread to form spot spread at the edge part of the central part of the lamp shade, and then the central part of the lamp shade is adhered and dried to form the lamp shade of the LED lighting device; (the opening of the other proportional valve is smaller than that of the proportional valve, and the opening of the other proportional valve is larger than that of the proportional valve on the rubber tube of the dispensing head when the dispensing head dispenses the LED chip; because the high-transparency material is also epoxy resin, the epoxy resin can be sprayed in the die while the LED chip is coated with the epoxy resin to form the required edge part of the lampshade, and only one spraying head is needed to be additionally arranged, so that the edge part of the lampshade is formed by spraying while the LED chip is coated with the epoxy resin, the working hours are reduced, and the working efficiency is improved. The soft mold is adopted, the sprayed epoxy resin is conveniently taken out of the soft mold after the epoxy resin is molded (the molded epoxy resin piece in the mold can be taken out only by pulling the edge of the soft mold outwards with a little force). When the lower layer is propped against the lower layer and has resistance after the setting, the lower layer can not continuously drill forwards due to the action of the limiting baffle (the setting is simple, the inner and outer holes can be drilled for the two layers of lamp covers respectively through hands, and the hands can obviously sense after drilling through one layer), on one hand, the surface grooves are drilled on the lower layer of lamp cover to increase diffuse reflection, on the other hand, the lower layer of lamp cover (the lower layer of lamp cover refers to the inner layer of lamp cover if the outer layer of lamp cover is drilled, and the lower layer of lamp cover refers to the outer layer of lamp cover if the inner layer of lamp cover is drilled) can play the role of prompting that the perforation is finished (the limiting baffle can be cancelled through the sensing effect of the hands even, namely, when the sudden resistance is reduced suddenly, the drill bit advances for a certain distance after a short time, the resistance is obviously sensed, and a worker holding the hand drill stops to continuously drill immediately).
The further technical scheme is that a space is arranged between the inner-layer lampshade and the outer-layer lampshade, and the inner-layer lampshade is fixedly connected with the outer-layer lampshade through a plurality of connecting columns; the cooling ventilation holes on the inner layer lampshade and the outer layer lampshade are formed by drilling holes through a drilling mechanism.
The invention has the advantages and beneficial effects that: because the spot coating is an intermittent process, intermittent operation is also carried out on the additionally arranged spray head, the arrangement is convenient to control, and the opening degree of the proportional valve on the rubber pipe connected with the spray head is larger than that of the proportional valve on the rubber pipe connected with the spot coating head, so that the quantity of sprayed epoxy resin can be ensured to be enough to fill the flexible mould so as to obtain a required lampshade. The dispensing head and the spraying head are fixedly arranged on the actuating part of the dispensing sprayer frame, so that the spraying head sprays epoxy resin into a die right below the spraying head when the dispensing head dispenses, and the die matched with the lampshade in a profiling way is quite larger than the LED chips in size, so that the spraying head is still above the die even if the spraying head moves along with the actuating part during dispensing work of a plurality of LED chips;
the lamp shade is partly to adopt more transparent material [ adopt epoxy or 1mm thickness soft glass (withstand voltage is greater than or equal to 500V, the luminousness is about 99%) ], especially lamp shade edge (the luminousness at lamp shade edge is higher in lamp shade center, on the one hand can reduce "illumination intensification" phenomenon, in addition, because the irradiation area that the lamp shade edge faces is more distant place, the illuminance of more distant place has also been strengthened simultaneously to a certain extent like this, brighter under the LED lamp that has avoided conventional LED lighting device existence has, the illumination difference that far place is not enough bright, set up like this and reduced this difference, a setting has played two effects.
The double-layer lamp shade is provided with cooling ventilation holes, and ventilation holes on the two layers are arranged in a staggered manner; on one hand, the dazzling, the unsmooth and the temperature rising sense under the lighting device caused by direct light irradiation are avoided (as the direct and effective method for improving the light efficiency is to reduce the working temperature of the lighting device, the forward pressure drop of the lighting device is increased due to the reduction of the working temperature of the lighting device, so that the extra heating loss of the lighting device is reduced; on the other hand, the lamp shade is protected from sundries entering the worn lamp beads. In addition, a filter screen can be arranged on the ventilation holes on the outermost layer to prevent dust from entering the lighting device.
Directly form the isolation protection layer at the epoxy of lamp shade surface spraying high transparency after the stoving, set up the cooling bleeder vent that is linked together simultaneously on lamp shade and isolation protection layer, the cooling bleeder vent on both is the slope of different directions and sets up, has guaranteed the heat dissipation on the one hand, has reduced lamp pearl heating coefficient and has made the light efficiency of lamp pearl effectively promote, on the other hand the setting of the cooling bleeder vent that is linked together like this can effectively avoid impurity (have impurity of certain weight and great particle diameter) etc. entering lighting device inside.
Two proportional valves are arranged on the rubber tube of the spraying head, one of the proportional valves is opened to the maximum when spraying in the flexible forming die to form the edge part of the lampshade, and a passage is formed; the edge part of the lamp shade and the central part of the lamp shade are spread to a certain degree when being spread to form spot spread at the edge part of the central part of the lamp shade, and then the central part of the lamp shade is adhered and dried to form the lamp shade of the LED lighting device; (the opening of the other proportional valve is smaller than that of the proportional valve, and the opening of the other proportional valve is larger than that of the proportional valve on the rubber tube of the dispensing head when the LED chip is dispensed by the dispensing head
Because the high-transparency material is also epoxy resin, the epoxy resin can be sprayed in the die while the LED chip is coated with the epoxy resin to form the required edge part of the lampshade, and only one spraying head is needed to be additionally arranged, so that the edge part of the lampshade is formed by spraying while the LED chip is coated with the epoxy resin, the working hours are reduced, and the working efficiency is improved.
The soft mold is adopted, the sprayed epoxy resin is conveniently taken out of the soft mold after the epoxy resin is molded (the molded epoxy resin piece in the mold can be taken out only by pulling the edge of the soft mold outwards with a little force). When the next layer is propped against the lamp cover with resistance after the lamp cover is manually drilled (cooling and ventilation holes), the hole cannot be continuously drilled forwards due to the effect of the limiting baffle (the setting is simple, the two layers of lamp covers can be respectively drilled inside and outside through manual operation, and the person can obviously feel after drilling through one layer), on one hand, the surface grooves are drilled on the next layer of lamp cover to increase diffuse reflection, on the other hand, the next layer of lamp cover (the next layer of lamp cover refers to the lamp cover of the inner layer if the outer layer of lamp cover is drilled, and the next layer of lamp cover refers to the lamp cover of the outer layer of lamp cover if the inner layer of lamp cover is drilled) can play a role in prompting that the hole is drilled (drilling) is finished (even the limiting baffle can be canceled through the sensing effect of the person, namely, when the sudden resistance is suddenly reduced after a short time, the drill bit is advanced for a certain distance, the person can obviously feel resistance, and the worker holding the drill can immediately stop drilling continuously).
Drawings
FIG. 1 is a schematic view of a first embodiment of a high-efficiency LED lamp bead according to the present invention;
FIG. 2 is a perspective view of FIG. 1;
FIG. 3 is a schematic diagram of an LED lighting device including high light efficiency LED beads;
FIG. 4 is another schematic diagram of FIG. 3;
FIG. 5 is a front view of the spot-coating applicator of the present invention;
FIG. 6 is a side view of FIG. 5;
FIG. 7 is a schematic view of the spot-coating head of FIG. 5 after spot-coating a partial area;
FIG. 8 is a side view of FIG. 7;
Figure 9 is another view of a lamp housing portion in accordance with a second embodiment of the present invention;
FIG. 10 is an enlarged partial schematic view of the upper half of FIG. 9;
Fig. 11 is a schematic view showing the lamp housing of fig. 9 in a state where drilling by a hand-held electric drill is started;
Fig. 12 is a schematic view of the state after the drilling of fig. 11 is completed.
In the figure: 1. a lamp base; 2. a lamp cup; 3. a substrate; 4. a bulb shell; 5. dispensing head; 6. a spray head; 7. a rubber tube; 8. a proportional valve; 9. a lamp shade; 10. edge portions; 11. cooling and ventilation holes; 12. a frame-shaped frame; 13. a three-shaft transmission mechanism; 14. an actuation part; 15. a connecting column; 16. a hand-held drilling machine; 17. a limit baffle; 18. a drill bit.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
Embodiment one:
As shown in fig. 1 to 8 (for convenience of illustration, the lamp beads in fig. 3 and the cooling ventilation holes on the inner-layer lamp cover are shown in perspective; fig. 4 shows the center part and the edge part of the lamp cover), the invention relates to a high-light-efficiency LED lamp bead, which consists of a lamp cap 1, a lamp cup 2, an LED chip, a substrate 3 and a bulb shell 4 from bottom to top; the LED chip and the substrate 3 are arranged in the lamp cup 2, and the LED chip is arranged on the substrate 3; the LED chip is provided with a fluorescent powder epoxy resin adhesive layer; red fluorescent powder and fluorescent powder mixed with green fluorescent powder are arranged in the fluorescent powder epoxy resin glue layer; the fluorescent powder epoxy resin adhesive layer on the LED chip is formed by centrifugal precipitation after spot coating by a spot coating sprayer. The spot coating spraying machine is used for spot coating the fluorescent powder epoxy resin adhesive layer on the LED chip and intermittently spraying a lampshade 9 in the LED lighting device containing the high-light-efficiency LED lamp beads in the die; the spot coating spraying machine comprises a spot coating head 5 and a spraying head 6 which are arranged on an actuating part 14 of a frame of the spot coating spraying machine, and a space is arranged between the spraying head 6 and the spot coating head 5; when the spot-coating spraying machine works, the opening of the proportional valve 8 on the rubber tube 7 connected with the spot-coating head 5 is smaller than that of the proportional valve 8 on the rubber tube 7 connected with the spraying head 6; the fluorescent powder epoxy resin adhesive layer is provided with a plurality of holes for light diffuse reflection.
The LED lighting device comprises high-light-efficiency LED lamp beads and a lamp shade 9 covered outside the lamp beads, wherein the edge part 10 outside the center of the lamp shade 9 is higher in transparency than the center of the lamp shade 9, and the edge part 10 of the lamp shade 9 is made of an epoxy resin material with pressure resistance not less than 500V and light transmittance of 99% or a soft glass material with thickness of 1 mm; the color temperature of the light emitted by the LED lighting device is 5500K, and the light intensity is 4000lm. The lamp shade 9 comprises inlayer lamp shade 9 and outer lamp shade 9, all sets up cooling bleeder vent 11 on inlayer lamp shade 9 and the outer lamp shade 9, and the cooling bleeder vent 11 dislocation set on inlayer lamp shade 9 and the outer lamp shade 9. The edge part 10 outside the center of the lampshade 9 is formed by intermittently spraying epoxy resin in a flexible forming die and then drying the epoxy resin while the LED chip is coated by a spot coating sprayer; the spot-coating spraying machine consists of a frame-shaped frame 12 and a triaxial transmission mechanism 13 (the triaxial transmission mechanism 13 is generally composed of an X-direction sliding table, the sliding table is generally driven by a screw nut transmission mechanism and a driving motor reducer, a Y-axis transmission plate is fixedly arranged on the sliding table, a screw nut transmission mechanism is arranged on the transmission plate to drive the Y-direction sliding plate to slide, the Y-direction sliding plate and the transmission plate are arranged in a sliding manner, another screw nut transmission mechanism is arranged on the Y-direction sliding plate to drive an actuating part 14 to slide in the Z-direction, which is not described in detail in the prior art), an actuating part 14 on the triaxial transmission mechanism 13, a spot-coating head 5 fixedly arranged on the actuating part 14 and a spraying head 6, and the actuating part 14 is a sliding plate which slides relative to the Z-axis of the triaxial transmission mechanism 13; the dispensing head 5 and the spraying head 6 are respectively connected with an epoxy resin tank through a rubber pipe 7, fluorescent powder is mixed in epoxy resin in the epoxy resin tank connected with the dispensing head 5, two proportional valves 8 are arranged on the rubber pipe 7 connected with the spraying head 6, and one proportional valve 8 is arranged on the rubber pipe 7 connected with the dispensing head 5.
The working principle is as follows:
The opening degree of the proportional valve on the rubber tube connected with the spraying head is larger than that of the proportional valve on the rubber tube connected with the dispensing head, so that the quantity of the sprayed epoxy resin can be ensured to be enough to fill the flexible die so as to obtain a required lampshade. The dispensing head and the spraying head are fixedly arranged on the actuating part of the dispensing sprayer frame, so that the spraying head sprays epoxy resin into a die right below the spraying head when the dispensing head dispenses, and the die matched with the lampshade in a profiling way is quite larger than the LED chips in size, so that the spraying head is still above the die even if the spraying head moves along with the actuating part during dispensing work of a plurality of LED chips;
two proportional valves are arranged on the rubber tube of the spraying head, one of the proportional valves is opened to the maximum when spraying in the flexible forming die to form the edge part of the lampshade, and a passage is formed; the edge part of the lamp shade and the central part of the lamp shade are spread to a certain degree when being spread to form spot spread at the edge part of the central part of the lamp shade, and then the central part of the lamp shade is adhered and dried to form the lamp shade of the LED lighting device; (the opening of the other proportional valve is smaller than that of the proportional valve, and the opening of the other proportional valve is larger than that of the proportional valve on the rubber tube of the dispensing head when the dispensing head dispenses the LED chip;
the soft mold is adopted, the sprayed epoxy resin is conveniently taken out of the soft mold after the epoxy resin is molded (the molded epoxy resin piece in the mold can be taken out only by pulling the edge of the soft mold outwards with a little force). When the lamp is propped against the next layer to have resistance after the lamp is arranged in the way, the lamp cannot be continuously drilled forwards due to the effect of the limiting baffle (the arrangement is simple, the inside and outside of the two layers of lamp covers can be respectively drilled through the lamp by hands, and the lamp can be obviously perceived by hands after drilling through one layer), on one hand, the surface grooves are drilled on the next layer of lamp cover to increase diffuse reflection, and on the other hand, the next layer of lamp cover (if the lamp cover is used for drilling the outer layer of lamp cover, the next layer of lamp cover refers to the lamp cover of the inner layer of lamp cover, and if the lamp cover is used for drilling the inner layer of lamp cover, the next layer of lamp cover refers to the lamp cover of the outer layer of lamp cover) can play a role in prompting that the perforation (drilling) is completed;
embodiment two:
the difference from the first embodiment is that, as shown in fig. 9 to 12, a space is provided between the inner-layer lamp shade 9 and the outer-layer lamp shade 9, and the inner-layer lamp shade 9 and the outer-layer lamp shade 9 are fixedly connected by a plurality of connecting posts 15; the cooling ventilation holes 11 on the inner layer lampshade 9 and the outer layer lampshade 9 are formed by drilling holes through a drilling mechanism. The drilling mechanism consists of a hand-held drilling machine 16 and a limit baffle 17 fixedly arranged on the handle of the hand-held drilling machine 16, and the sum of the thickness of the inner lampshade 9 and the length of the connecting column 15 is equal to the distance between the limit baffle 17 and a drill bit 18 of the hand-held drilling machine 16. (the thicknesses of the inner and outer lamp covers 9 and 9 are identical).
The working principle is as follows:
Even can cancel the design limit baffle through the perception effect of staff: when the resistance suddenly decreases, the resistance is obviously felt after the drill bit advances for a certain distance for a short time, and the worker holding the hand-held drill immediately stops to continue drilling;
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (2)
1. The LED lighting device comprises high-light-efficiency LED lamp beads and a lamp shade covered outside the lamp beads, and is characterized in that the edge part outside the center of the lamp shade is higher in transparency than the center of the lamp shade, and the edge part of the lamp shade is made of epoxy resin material with pressure resistance not less than 500V and light transmittance of 99% or soft glass material with thickness of 1 mm; the color temperature of the light emitted by the LED lighting device is 5500K, and the light intensity is 4000lm; the high-luminous-efficiency LED lamp bead consists of a lamp cap, a lamp cup, an LED chip, a substrate and a bulb shell from bottom to top; the LED chip and the substrate are arranged in the lamp cup, and the LED chip is arranged on the substrate; the LED chip is provided with a fluorescent powder epoxy resin adhesive layer;
red fluorescent powder and fluorescent powder mixed with green fluorescent powder are arranged in the fluorescent powder epoxy resin glue layer; the fluorescent powder epoxy resin adhesive layer on the LED chip is formed by centrifugal precipitation after spot coating by a spot coating sprayer;
The spot coating spraying machine is used for spot coating the fluorescent powder epoxy resin adhesive layer on the LED chip and intermittently spraying a lampshade in the LED lighting device comprising the high-light-efficiency LED lamp beads in the die; the spot coating spraying machine comprises a spot coating head and a spraying head which are arranged on an actuating part of a frame of the spot coating spraying machine, and a space is arranged between the spraying head and the spot coating head; when the spot-coating spraying machine works, the opening of the proportional valve on the rubber pipe connected with the spot-coating head is smaller than that of the proportional valve on the rubber pipe connected with the spraying head;
the fluorescent powder epoxy resin adhesive layer is provided with a plurality of holes for diffuse reflection of light;
the lampshade consists of an inner lampshade and an outer lampshade, wherein the inner lampshade and the outer lampshade are respectively provided with cooling ventilation holes, and the cooling ventilation holes on the inner lampshade and the outer lampshade are arranged in a staggered manner;
A space is arranged between the inner layer lampshade and the outer layer lampshade, and the inner layer lampshade is fixedly connected with the outer layer lampshade through a plurality of connecting posts; the cooling ventilation holes on the inner-layer lampshade and the outer-layer lampshade are formed by drilling holes through a drilling mechanism;
The air holes on the outermost layer are provided with a filter screen; the drilling mechanism consists of a handheld drilling machine, and the thickness of the inner lampshade is consistent with that of the outer lampshade;
An epoxy resin isolation protective layer with withstand voltage not less than 500V and light transmittance of 99% is arranged on the surface of the lampshade; the lamp shade and the isolation protective layer are respectively provided with a cooling ventilation hole, and the cooling ventilation holes on the lamp shade and the isolation protective layer are communicated; the cooling air holes on the lampshade and the isolation protective layer are obliquely arranged with the thickness direction of the lampshade or the thickness direction of the isolation protective layer.
2. The LED lighting device of claim 1, wherein the edge portion outside the center of the lamp housing is formed by intermittently spraying epoxy resin in a flexible molding die and then drying the same while dispensing the LED chip using a dispenser; the spot coating spraying machine consists of a frame-shaped frame, a triaxial transmission mechanism on the frame, an actuating part on the triaxial transmission mechanism, a spot coating head and a spraying head which are fixedly arranged on the actuating part, wherein the actuating part is a sliding plate which slides relative to the Z axis of the triaxial transmission mechanism;
The dispensing head and the spraying head are respectively connected with the epoxy resin tank through a rubber pipe, fluorescent powder is mixed in epoxy resin in the epoxy resin tank connected with the dispensing head, two proportional valves are arranged on the rubber pipe connected with the spraying head, and a proportional valve is arranged on the rubber pipe connected with the dispensing head.
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| CN202311135101.5A CN117174809B (en) | 2023-09-05 | 2023-09-05 | High-light-efficiency LED lamp bead and LED lighting device comprising same |
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| CN117174809B true CN117174809B (en) | 2024-04-30 |
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| CN208983135U (en) * | 2018-11-20 | 2019-06-14 | 深圳市安泽通科技发展有限公司 | A kind of LED lamp |
| CN110379906A (en) * | 2018-04-13 | 2019-10-25 | 深圳市科纳实业有限公司 | A kind of mixed fluorescent powder and fluorescent powder glue-line, LED lamp bead and the method for making LED lamp bead |
| CN110379907A (en) * | 2019-06-19 | 2019-10-25 | 昆山市源品电子技术服务有限公司 | High light efficiency LED lamp bead and its production method |
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| CN202327993U (en) * | 2011-10-25 | 2012-07-11 | 袁焯荣 | LED (Light-Emitting Diode) lampshade and LED lamp |
| EP3006814A1 (en) * | 2014-05-04 | 2016-04-13 | Hangzhou Hangke Optoelectronics Stock Limited Corp | Led bulb light with high luminous efficacy |
| CN104848164A (en) * | 2015-05-25 | 2015-08-19 | 刘骁洋 | Application of epoxy resin to LED lamp glass lampshade |
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