CN202674892U - Self-cooling light emitting diode (LED) lamp bead and luminous module thereof - Google Patents

Abstract

A self-heating LED lamp bead includes an LED chip and a heat sink, and the LED chip is directly molded on the heat sink. The self-heating LED lamp bead of the utility model forms an optimal integrated unit module of the LED light-emitting module by molding the LED chip on the radiator and matching optical components. The self-heating LED lamp bead not only has the best heat dissipation performance, but also has the best optical utilization efficiency, and has the simplest installation structure. The self-radiating LED bead can be conveniently assembled into a lamp or a light emitting module.

Description

Self-heating LED lamp bead and its light-emitting module

【Technical field】

The utility model relates to a self-radiating LED lamp bead and a light-emitting module thereof, in particular to a self-heat-radiating LED bead and a light-emitting module with good heat dissipation performance and convenient installation.

【Background technique】

In the traditional lighting technology, tungsten filament bulbs are mostly used. Due to the large power consumption and volume, low luminous efficiency and short life, they are increasingly unable to meet the needs of modern society. With the development of semiconductor technology, the application of LEDs with small power consumption and volume, high luminous efficiency and long life in electric light source technology has attracted more and more attention.

With the advancement of technology, the application of light-emitting diodes (LIGHT EMITINGDIODE, referred to as LED) is becoming more and more extensive, especially the power of LEDs is continuously improved, and LEDs are gradually extended from signal display to the field of lighting sources. However, the promotion of high-power LEDs faces the biggest problem of low total luminance. In order to improve the total brightness of light, it is generally adopted to increase the brightness of a single LED, and to combine multiple packaged LED lamp beads in series and parallel. Whether increasing the brightness of a single chip or connecting them in series and parallel, the power must be increased, which will drastically increase the heat generation. Generally, the single power of LED lamp beads is relatively small, and the brightness is not enough. In order to improve the brightness, people often combine multiple LED lamp beads as a light source, and fix them on a circuit board and heat sink at the same time. The brightness and life of LED lamp beads have a certain relationship with their working temperature. The better the LED heat dissipation effect, the lower the working temperature, the higher the brightness and the longer the life. With the advancement of LED manufacturing technology, the power of a single LED can now be made larger and larger. When sharing a heat sink, the heat dissipation effect is poor, especially when any high-power LED lamp bead is overheated, the heat will put the The temperature of the entire heat sink increases, thereby reducing the heat dissipation function of the heat sink, and may even cause the temperature of other lamp beads to be too high or even destroyed.

At present, only about 35% of the electric energy of the LED is converted into light energy and radiated out, and the remaining 65% of the electricity is converted into heat. Low-power LEDs produce less total heat, and the heat generation problem is not prominent. However, the power of high-power lighting LEDs is dozens or hundreds of times that of the original small LEDs. The heat generation problem has suddenly become the most critical factor affecting the life of LEDs and luminous efficiency. One of the factors, and become the biggest bottleneck hindering the promotion of lighting. Therefore, how to solve the heat dissipation problem has become an important issue in the development of the LED industry. In addition, since the existing LED optical structures are all LED modules with a heat sink, the designers increase the area and weight of the heat sink while ensuring the heat dissipation effect, so that the product cannot meet the requirements of small size, light weight, The need for easy assembly.

【Content of utility model】

In order to overcome the problem of poor heat dissipation in the prior art, the utility model provides a self-heating LED bead with good heat dissipation performance and easy installation and a light emitting module thereof.

The technical solution of the utility model to solve the technical problem is to provide a self-radiating LED lamp bead, which includes an LED chip and a heat sink, and the LED chip is directly molded on the heat sink.

Preferably, the LED chip is positioned on the plane of the heat sink, or in a groove defined on the plane, or on a protrusion defined on the plane, and a reflective layer is included in the groove for reflecting The light beam emitted by the LED chip.

Preferably, the heat sink includes a solid central shaft, and a plurality of outwardly disposed heat dissipation fins are formed on it, wherein at least one heat dissipation fin is provided with at least one wire groove for guiding the lead-out electrodes on the LED chip .

Preferably, at least one of the heat dissipation fins is provided with a positioning hole, and the positioning hole cooperates with a screw, a positioning post or a buckle structure to position the self-heating LED bead on a light emitting module.

Preferably, it further includes a primary lens or a secondary lens, arranged above the LED chip, and positioned on the heat sink through at least two pins, threads, bonding, or bayonet on the primary lens or secondary lens superior.

Preferably, the heat sink is circular, square, quadrangular or hexagonal, and the heat sink can also be cylindrical or thin.

Preferably, the secondary lens includes a first lens and a second lens, the two lenses are integrated and further include a protective cover.

Preferably, the lead-out electrode is connected to a connector through a wire, and the connector is arranged below or beside the radiator for electrically connecting the power controller.

Another technical solution of the utility model to solve the technical problem is: LED light-emitting module, which includes a shell, a top cover, a power controller, and a plurality of LED lighting modules as described in any one of claims 1 to 8. Self-radiating LED lamp beads, the upper cover and the housing define a housing space for accommodating the power controller and the plurality of self-radiating LED lamp beads, the upper cover is provided with a plurality of through holes, and the plurality of self-radiating LED lamps The beads pass through the through holes respectively, and the heat sink thereof is positioned between the shell base and the upper cover.

Preferably, each self-radiating LED bead is positioned on the upper cover through screws, positioning posts or buckle structures and positioning holes provided on the heat-dissipating fins.

Preferably, it further includes an aluminum substrate, on which a plurality of through holes are provided, corresponding to the through holes of the upper cover, and solder joints and lines corresponding to the lead-out electrodes of the self-heating LED lamp bead are provided on the periphery of the aluminum substrate, and the lines It is further electrically connected with the power controller.

Compared with the prior art, the self-radiating LED lamp bead of the utility model can realize good transmission of heat energy of the LED chip by forming an LED chip on a radiator, and at the same time can realize convenient assembly of the LED light-emitting module. By using the Self-heating LED lamp beads no longer need to assemble any heat sink in the LED light-emitting module, and directly insert or position the LED lamp bead on the shell of the LED light-emitting module to achieve simple, convenient, and good heat dissipation performance Each light-emitting module or component. Furthermore, the self-heating LED bead is equipped with a lens at the same time to form an optimal integrated unit module of the LED lighting module. The self-heating LED bead not only has the best heat dissipation performance but also can be equipped with the best optical For the light emitting effect, the LED bead is directly positioned on the heat sink, and the self-heating LED bead can facilitate the assembly of the self-heating LED bead. In addition, the self-heating LED lamp bead is equipped with a lens cover, which can be installed with various structures and shapes of lenses according to customer needs to achieve different light output areas, light output shapes, light output angles, and light output brightness, thereby further simplifying assembly. with flexibility. Aluminum substrate with holes

【Description of drawings】

Fig. 1 is a schematic cross-sectional view of the first embodiment of the self-radiating LED lamp bead of the present invention.

Fig. 2 is a schematic structural view of the first embodiment of the self-radiating LED lamp bead of the present invention.

Fig. 3 is a structural diagram of the second embodiment of the self-radiating LED lamp bead of the present invention.

Fig. 4 is a structural diagram of a third embodiment of the self-radiating LED lamp bead of the present invention.

Fig. 5 is a structural diagram of a fourth embodiment of the self-radiating LED lamp bead of the present invention.

Fig. 6 is a structural diagram of a fifth embodiment of the self-radiating LED lamp bead of the present invention.

Fig. 7 is a schematic structural view of the sixth embodiment of the self-radiating LED lamp bead of the present invention.

Fig. 8 is a schematic structural view of the seventh embodiment of the self-radiating LED lamp bead of the present invention.

9 is a schematic structural view of the LED substrate of the LED chip of the seventh embodiment of the self-heating LED lamp bead of the present invention.

Fig. 10 is a schematic diagram of the lens structure of the seventh embodiment of the self-radiating LED lamp bead of the present invention.

Fig. 11 is a schematic diagram of the structure of the lens cover of the seventh embodiment of the self-radiating LED lamp bead of the present invention.

Fig. 12 is a schematic structural view of a radiator of a seventh embodiment of the self-radiating LED lamp bead of the present invention.

Fig. 13 is a schematic structural view of the first embodiment of the light-emitting module using the self-radiating LED lamp bead of the present invention.

Fig. 14 is a structural schematic view of the light-emitting module using the self-heating LED lamp bead of the present invention without the upper cover.

Fig. 15 is a structural schematic diagram of the aluminum substrate of the light-emitting module using the self-heating LED lamp bead of the present invention.

【Detailed ways】

Please refer to FIG. 1 and FIG. 2 , which are the cross-sectional view and structural schematic diagram of the first embodiment of the self-heating LED lamp bead of the present invention. The self-heating LED bead 10 sequentially includes a reflector 11 , a lens 12 , an LED chip 13 , an LED base 15 and a heat sink 16 , and two lead-out electrodes 14 are drawn out from both sides of the LED base 15 .

The lens 12 is integrated with the reflector 11 and positioned on the LED base 15 , wherein the lens 12 is facing the LED chip 13 . The reflective cup 11 is bowl-shaped, and the LED chip 13 is arranged at the bottom center of the reflective cup 11. The reflective cup 11 controls the illumination distance and the illuminated area of the main spot of the light beam emitted by the LED chip 13. The reflective cup 11 is Made of vacuum aluminum plating, it has better light reflection performance.

The LED substrate 15 is a copper column, a ceramic column, or a silver column made of a material with high thermal conductivity such as copper column, ceramics, silver, etc., which is passed through silver glue, silica gel, resin, tin, alloy material, eutectic solder, etc. material, copper paste, and tin paste to position the LED chip 13 on it, the bonding material has good thermal conductivity and heat resistance, and its coefficient of thermal expansion corresponds to the LED chip 13 . The copper posts, ceramic posts, or silver posts can also be screwed into the radiator 16 through the lower studs.

The heat sink 16 is made of copper, aluminum or a composite of multiple materials, the LED substrate 15 is arranged on it, and positioned by silver glue, silica gel, resin, tin, alloy material, eutectic solder, copper paste, and tin paste . Wherein, the LED substrate 15 can be positioned on the plane of the heat sink 16 , or in a groove defined on the plane, or on a protrusion defined on the plane.

The heat sink 16 is a solid central shaft, on which a plurality of radiating fins 160 are formed, and the plurality of radiating fins 160 include two symmetrically arranged radiating fins 161 defining a line groove 161 for guiding The two lead-out electrodes 14 also include two symmetrically arranged positioning grooves 163. The positioning grooves 163 can be threaded holes, and the positioning of the self-heating LED lamp bead 10 is realized by screws, screws, and screw rods. The positioning grooves 163 can also be An opening, which can be used for fixing or positioning the self-heating LED lamp bead 10 with matching buckles and elastic pieces. The radiator 16 can be processed into cylindrical, square, quadrangular, hexagonal or other shapes as required by lathe turning, die casting, or die extrusion, etc., so as to improve the heat dissipation performance and facilitate the production of products. assembly.

The self-radiating LED lamp bead 10 of the utility model is provided with a heat sink 16 for each LED chip 13, and a lens 12 is arranged at the same time, thereby forming an optimal LED light-emitting module integrated unit module, the self-radiating LED lamp bead 10 not only has the best heat dissipation performance but also has the best combination structure, which can facilitate the self-heat dissipation LED lamp bead 10 to be assembled into a light emitting module.

Please refer to FIG. 3 , which is the second embodiment of the self-radiating LED lamp bead of the present invention. The self-radiating LED lamp bead 20 has a similar structure to the self-radiating LED lamp bead 10, except that the self-radiating LED lamp bead 20 only includes one The lens 21, the primary lens 21 is positioned on the LED base 25, and it is configured through different structures of the lens 21 to control the light emitting distance of the light beam from the LED chip 23 and the illumination area of the main spot.

Please refer to FIG. 4 , which is the third embodiment of the self-radiating LED lamp bead of the present invention. The self-radiating LED lamp bead 30 has a similar structure to the self-heating LED lamp bead 10, except for the reflector of the self-radiating LED lamp bead 30. 31 is further provided with a protective cover 311 .

Please refer to Fig. 5 , which is the fourth embodiment of the self-radiating LED lamp bead of the present invention. Secondary lens 41 and one primary lens 42, the secondary lens 41 and the primary lens 42 are integrated, the integrated two lenses can further adjust the beam emission path and intensity according to the needs of use, and the integrated lens Pre-finished, so it is easy to assemble the product.

Please refer to FIG. 6 , which is the fifth embodiment of the self-heating LED lamp bead of the present invention. The LED chip 53 is arranged on the LED substrate 55 and is arranged on the LED heat sink 56 through the LED substrate 55. The LED chip 53 outside is provided with two conductors 58 that are used to turn on the power supply, wherein at least one conductor 58 is insulated from the heat sink 56, and the other conductor 58 is insulated from the heat sink 56, and can also be conducted with the heat sink 56. Device 56 doubles as a conductor. The LED chip 53 and the conductor 58 are connected with a wire 581, and the conductor 58 is connected with two corresponding connectors 59 with a wire 583. The wire can be gold, aluminum, or copper wire that is welded to the Between the conductor 58 and the LED chip 53 , and between the conductor 58 and the corresponding connector 59 . Wherein, the wire 583 connecting the conductor 58 and the connector 59 passes through the through hole provided in the heat sink 56 , and the connector 59 is disposed at the bottom of the heat sink 56 .

Please refer to FIG. 7 , which is the sixth embodiment of the self-heating LED lamp bead of the present invention. The self-heating LED lamp bead 60 has a similar structure to the self-heating LED lamp bead 50, except that the connector 69 is arranged on the heat sink 66 side.

Please refer to FIG. 8, which is a schematic structural diagram of the seventh embodiment of the self-radiating LED lamp bead of the present invention. FIG. A schematic diagram of the lens structure of the seventh embodiment of the self-radiating LED lamp bead of the utility model. Schematic diagram of the structure of the radiator of the embodiment. The self-heating LED lamp bead 70 includes a lens 72 , an LED chip 73 , an LED base 75 and a heat sink 76 in sequence, and two lead-out electrodes 74 are led out from two sides of the LED chip 73 .

The lens 72 is opposite to the LED chip 73 , which is a lens integration body including a first lens 721 , a second lens 722 and four pins 723 . The second lens 722 is bowl-shaped, and the LED chip 73 is arranged at the bottom center of the second lens 722. The illumination distance and the illumination distance of the main spot of the light beam emitted by the LED chip 73 are controlled by the second lens 722 and the first lens 721. area, with better light reflection performance. The pin 723 is disposed on the bottom of the second lens 722 .

The LED base 75 is a copper column, a ceramic column, a silver column, a copper-plated silver column, a copper sheet, a ceramic sheet, or a silver sheet made of materials with high thermal conductivity such as copper, ceramics, and silver. It uses silver glue, silica gel, resin, tin, alloy material, eutectic solder, copper paste, and tin paste to position the LED chip 73 on it. The adhesive has good thermal conductivity and heat resistance, and its thermal expansion The coefficient corresponds to this LED chip 73 . The copper post, ceramic post, or silver post can also be screwed into the heat sink 76 through the lower stud 751 .

The heat sink 76 is made of copper, aluminum or a composite of multiple materials, and the LED substrate 75 is disposed on it, through silver glue, silica gel, resin, tin, alloy material, eutectic solder, copper paste, tin paste or Screw column positioning. Wherein, the LED base 75 can be positioned on the plane of the heat sink 76 , or in a groove defined on the plane, or on a protrusion defined on the plane.

The heat sink 76 is a solid central shaft, on which a plurality of radiating fins 760 are formed, and the plurality of radiating fins 760 include two symmetrically arranged radiating fins 761 defining a line groove 761 for guiding The two lead-out electrodes 74 also include two symmetrically arranged positioning grooves 763. The positioning grooves 763 can be threaded holes, and the positioning of the self-heating LED lamp bead 70 is realized by screws, screws, and screw rods. The positioning grooves 763 can also be An opening, which can be used with matching buckles and elastic pieces to fix or position the self-heating LED lamp bead 70 . The heat dissipation fins 760 further include four pairs of heat dissipation fins arranged symmetrically and respectively provided with a locking hole 765 , and pins of the lens are inserted into and positioned in the locking holes 765 .

The radiator 76 can be processed into cylindrical, square, quadrilateral, hexagonal or other shapes as required by lathe turning, mold casting, or mold extrusion, etc., so as to improve the heat dissipation performance and facilitate the production of products. assembly.

The self-radiating LED lamp bead 70 of the utility model is provided with a heat sink 76 for each LED chip 73, and a lens 72 is arranged at the same time, thereby forming an optimal integrated unit module of the LED light-emitting module. The self-radiating LED lamp bead 70 not only has the best heat dissipation performance but also has the best combination structure, which can facilitate the self-heat dissipation LED lamp bead 70 to be assembled into a light emitting module.

The self-radiating LED bead 70 of the present invention is not limited to the above-mentioned structure, as shown in FIG. 11 , a lens cover 78 can be added to accommodate the lens 72'. The lens cover 78 includes a cover body 781 and a cover 783, the cover body 781 can be used to accommodate different lenses 72' therein, the cover cover 783 cooperates with the top of the cover body 781 to position the lens 72', the cover The bottom of body 781 includes four symmetrical prongs 785 . The four symmetrical pins 785 are inserted into and positioned in the locking holes 765 of the cooling fins 760 . Furthermore, the LED substrate 75 is an optional component, and it can also be unnecessary, and the LED chip 73 is directly molded on the heat sink 76 . Also, the number of lead-out electrodes 74 on the LED chip 73 is not limited to two, and can be changed to three, four or more according to practical needs. Moreover, the pins 723 on the lens 72 or the pins 825 of the lens cover can also have an asymmetrical structure.

Please refer to FIG. 13 , which is an assembled LED light-emitting module of the present invention with self-heating LED lamp beads. The LED light-emitting module 80 includes a housing 800 and a top cover 802. The top cover 802 and the housing 800 define a storage space. It is used for accommodating the power controller 806 and the plurality of self-heating LED lamp beads 10 . The upper cover 802 is provided with a plurality of through holes 804, the plurality of self-heating LED lamp beads 10 pass through the through holes 804 respectively, and the radiator 16 is positioned between the shell base 801 and the upper cover 802, the power control The device 806 is set on the base 801 of the housing. Each self-heating LED bead 10 is positioned on the upper cover 802 through screws 808 and positioning grooves 163 provided on the heat-dissipating fins 160 . The upper cover 802 further includes an aluminum base plate 809, the aluminum base plate 809 is positioned on the upper cover 802, and a plurality of through holes (not marked) are arranged on it, corresponding to the through holes 804 of the upper cover, the aluminum base plate 809 It is used to electrically connect the two lead-out electrodes 14 of the plurality of self-heating LED lamp beads 10 , and is electrically connected to the power controller 806 .

Compared with the prior art, the LED light-emitting module 80 of the present utility model adopts the self-radiating LED lamp bead 10 formed on a heat sink to form an LED chip, so that the heat energy of the LED chip can be well transmitted, and the LED light can also be realized at the same time. The assembly of the module is convenient. By using the self-heating LED lamp bead, it is no longer necessary to assemble any heat sink in the LED lighting module, and the LED lamp bead can be directly inserted or positioned on the shell of the LED lighting module. Realize simple, convenient, and various light-emitting modules or components with good heat dissipation performance. Furthermore, the self-heating LED bead is equipped with a lens at the same time to form an optimal integrated unit module of the LED lighting module. The self-heating LED bead not only has the best heat dissipation performance but also can be equipped with the best optical For the light emitting effect, the LED bead is directly positioned on the heat sink, and the self-heating LED bead can facilitate the assembly of the self-heating LED bead. In addition, the self-heating LED lamp bead is equipped with a lens cover, which can be installed with various structures and shapes of lenses according to customer needs to achieve different light output areas, light output shapes, light output angles, and light output brightness, thereby further simplifying assembly. with flexibility.

The above description is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Any modification made within the principles of the utility model, equivalent replacement and improvement, etc. should include the protection of the utility model. within range.

Claims (11)

1. self-cooling LED lamp pearl, it comprises a led chip, and a radiator, it is characterized in that: this led chip is directly molded on this radiator.

2. self-cooling LED lamp pearl as claimed in claim 1, it is characterized in that: this led chip is positioned on the plane of this radiator, or in the groove that defines on its plane, or on the projection that defines on this plane, comprise a reflector layer in this groove, be used for the light beam of this led chip emission of reflection.

3. self-cooling LED lamp pearl as claimed in claim 1, it is characterized in that: this radiator comprises a solid central shaft, and the upper radiating fin that forms a plurality of outside settings, wherein at least one radiating fin at least one metallic channel is set, be used for the extraction electrode on this led chip of guiding.

4. self-cooling LED lamp pearl as claimed in claim 1 is characterized in that: wherein at least one radiating fin a locating hole is set, this locating hole and screw, a locating dowel or a buckle structure cooperate this self-cooling LED lamp pearl of location on an illuminating module.

5. self-cooling LED lamp pearl as claimed in claim 1 is characterized in that: further comprise No. one lens or a secondary lens, be arranged at this led chip top, and by at least two pins on these lens or the secondary lens, screw thread, bonding, or bayonet socket is positioned on this radiator.

6. self-cooling LED lamp pearl as claimed in claim 1 is characterized in that: this radiator is for circular, and is square, quadrangle or hexagon, and this radiator can also be cylindricality or slice-shaped.

7. self-cooling LED lamp pearl as claimed in claim 5, it is characterized in that: this secondary lens comprises a first lens and one second lens, and these two lens integrate, and its outer protective cover that further comprises.

8. self-cooling LED lamp pearl as claimed in claim 3, it is characterized in that: this extraction electrode connects a connector by wire, and this connector is arranged at below or its side of this radiator, is used for being electrically connected power-supply controller of electric.

9. LED illuminating module, it comprises a shell, one loam cake, one power-supply controller of electric, a plurality of such as the described self-cooling LED lamp of the arbitrary claim pearl as described in the claim 1 to 8, this loam cake and this shell define a receiving space and are used for accommodating this power-supply controller of electric and these a plurality of self-cooling LED lamp pearls, cover on this a plurality of through holes are set, these a plurality of self-cooling LED lamp pearls pass respectively this through hole, and its radiator is positioned between this outer casing base and this loam cake.

10. LED illuminating module as claimed in claim 9 is characterized in that: this self-cooling LED lamp pearl is by screw, and the locating hole that arranges on locating dowel or buckle structure and its radiating fin cooperates locates this each self-cooling LED lamp pearl and cover on this.

11. LED illuminating module as claimed in claim 9, it is characterized in that: further comprise an aluminium base, a plurality of through holes are set on it, corresponding with the through hole of this loam cake, this aluminium base periphery is provided with solder joint and the circuit corresponding with self-cooling LED lamp pearl extraction electrode, and this circuit further is electrical connected with this power-supply controller of electric.

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