CN202188328U - LED lamp with high-efficiency heat radiation power supply assembly - Google Patents

Abstract

The utility model provides a LED lamps and lanterns with high-efficient heat dissipation power supply module, lamp shade including the intercombination, LED light source subassembly, the lamp body, and the lamp holder, wherein, the lamp body top is equipped with the heat conduction seat, LED light source subassembly rigid coupling is on the flat bottom of heat conduction seat, be formed with the cavity in the lamp body, the cavity of lamp body is arranged in to power supply module, power supply module contains insulating housing and arranges the drive power supply in this insulating housing in, insulating housing and heat conduction seat bottom rigid coupling, the lamp holder dress is on insulating housing keeps away from the one end of LED light source subassembly, be separated by with the lamp body is insulating, it is fixed, insulating housing and the space intussuseption of holding between the drive. The pouring sealant is in contact with the driving power supply and the insulating shell at the same time, so that heat generated by the driving power supply is transferred to the insulating shell in a heat conduction mode through the pouring sealant and is radiated outwards by the insulating shell, and the heat radiation effect is obviously improved compared with that of the prior art without the pouring sealant.

Description

LED luminaires with efficient heat dissipation power components

technical field

The utility model relates to an LED lighting device, in particular to an LED lamp with a high-efficiency heat dissipation power supply assembly, which belongs to the technical field of electric light sources and semiconductor lighting.

Background technique

Compared with traditional lighting sources, LED lighting sources have advantages that they do not have, such as lower power requirements, better driving characteristics, faster response speed, higher shock resistance, longer service life, green environmental protection and The continuous and rapid improvement of luminous efficiency has become a new generation of light sources that replace traditional light sources in the world.

However, for general lighting, high-power LED lamps must rely on the driving power supply to change the mains power supply in the application. Therefore, there is a problem that the life of the driving power cannot meet the life of the LED itself. Because most of the driving power supply currently uses electrolytic capacitors, and according to the characteristics of electrolytic capacitors, the life of the electrolytic capacitor will be doubled every time the temperature rises by 10 degrees Celsius. However, the LED itself emits a lot of heat, and some of the heat will be conducted through the wire. To the circuit board of the drive power supply, and the electronic devices of the drive power supply itself also emit heat when they are working. This heat will definitely affect the life of the electrolytic capacitor. Therefore, it is necessary to improve the heat dissipation efficiency of the LED lamp to increase the life of the electrolytic capacitor. The advantage of long life of LED can be brought into full play.

In the prior art, the circuit board of the LED light power supply is usually fixed in the insulating sleeve and then integrally inserted into the columnar cavity formed by the lamp body. The insulating sleeve plays the role of insulation and heat insulation. However, due to The inner cavity of the insulating sleeve - there is a gap between the inner wall of the insulating sleeve and the electronic components on the circuit board, and non-contact heat transfer makes it difficult for the heat generated by the electronic components on the circuit board during the working process of the lamp to dissipate out of the insulating sleeve tube, the temperature rises, and the power supply fails prematurely; in order to solve the above heat dissipation problems, some products use heat shrinkable tubes to wrap the power circuit board and install it into the lamp body cavity, but the heat shrinkable tube shrinks when heated, which will squeeze the electronic components of the circuit board , so that the power supply circuit board fails, and then, the Chinese patent CN201748361, the invention name is: a LED lamp power supply protection cover, which discloses a power supply protection cover made of soft materials, designed according to the actual size of the LED power supply module , made of high-temperature-resistant insulating plastic. When in use, place the LED power module in the inner cavity of the protective cover, and then connect the wires outside the protective cover with the LED lamp and the external input power supply, and then put it into the LED lamp. It plays the role of insulation, heat insulation and protection of electronic components from damage, but because it is made of soft materials, it is not conducive to the installation and fixing of the power supply in the cavity of the lamp body, so it is still unsatisfactory to use.

Contents of the invention

The utility model aims at the defect that the LED lamps in the prior art fail prematurely due to the poor heat dissipation effect of the power supply, so that the service life of the entire lamp is shortened, and provides an LED lamp with a high-efficiency heat dissipation power supply assembly.

In order to achieve the above object, the utility model adopts the following technical solutions:

An LED lamp with high-efficiency heat dissipation power supply components, including a lampshade combined with each other, an LED light source assembly, a lamp body, and a lamp holder, wherein a heat conduction seat is provided on the top of the lamp body, and the LED light source assembly is fixed to the heat conduction seat On the flat bottom, a cavity is formed in the lamp body, and the power supply assembly is placed in the cavity of the lamp body. It is characterized in that the power supply assembly includes an insulating casing and a driving power placed in the insulating casing, and the insulating casing It is fixedly connected with the bottom of the heat conduction seat, the lamp head is mounted on the end of the insulating shell away from the LED light source assembly, and is insulated from and fixed to the lamp body. The insulating shell and the driving power housed therein The space between them is filled with thermal conductive potting compound.

Further, the insulating housing is a cylindrical structure, and a slot is formed by die-casting in the cavity, and the driving power is inserted into the slot for positioning.

Further, the driving power supply has a rectangular printed circuit base plate, and the upper end of the cylindrical insulating housing is provided with screw holes for fixing, and the insulating housing is fixed to the flat-bottomed heat-conducting circular platform by screws.

Further, the lampshade and the lamp body are provided with cooling holes for exchanging heat between the lamp and the outside, and the heat conducting base is provided with through holes for forming an airflow channel in the lamp.

Further, the lamp cap of the LED lamp is a metal interface, and the surroundings are riveted on the insulating shell, wherein the metal part of the lamp cap is any form of universal lamp cap, one of which is a nickel-plated copper high-frequency porcelain E-26 standard screw port lamp head.

By adopting the above technical solutions, the following beneficial technical effects can be achieved:

1) The space between the insulating shell and the driving power housed in it is filled with heat-conducting potting compound. Since the potting compound is in contact with the driving power source and the insulating shell at the same time, it is beneficial for the heat generated by the driving power source to pass through the potting The glue is transferred to the insulating shell by means of heat conduction and dissipates heat from it to the outside, and the heat dissipation effect is significantly improved compared with the unfilled potting glue in the prior art;

2) In addition, the potting glue averages the heat generated by the electronic components of the circuit board on the driving power supply, avoids local high heat of individual components, prolongs the service life of the power supply, and thus improves the service life of the entire lamp. The heat-conducting potting glue adopts silicone flame-retardant and heat-conducting liquid potting glue. Before curing, the potting glue has good fluidity, moderate operating time, and convenient operation during use. After curing, it has small shrinkage rate and good high temperature resistance. Good flame retardancy, good thermal conductivity, good resistance to vulcanization reversion and good dielectric properties when used in airtight conditions at high temperatures;

3) There are holes on the lampshade, lamp body and heat transfer seat. Through the holes on the lamp cover and lamp body, the heat generated in the lamp can be dissipated quickly and exchanged with the external environment. In particular, on the heat transfer seat There are also holes, which correspond to the holes on the lampshade and lamp body to form airflow channels inside the lamp, further accelerating the heat dissipation.

Description of drawings

Fig. 1 is a schematic structural view of an LED lamp with a high-efficiency heat dissipation power supply assembly of the present invention;

Fig. 2 is a schematic diagram of the appearance of an LED lamp with a high-efficiency heat dissipation power supply assembly of the present invention;

Fig. 3 is an exploded view of the LED lamp with a high-efficiency heat dissipation power supply assembly of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail.

As shown in Figure 1, the LED lamp 100 with high-efficiency heat dissipation power supply components of the present invention includes a lampshade 1, an optical lens module 2, an LED light source assembly 3, a lamp body 5 and a lamp holder 10 combined with each other, wherein the lamp body 5 The top is provided with a heat conduction seat 4, preferably, the heat conduction seat 4 is configured as a flat-bottomed heat-conducting round table, the LED light source assembly 3 is fixed on the surface of the flat-bottomed heat-conducting round table, a cavity is formed in the lamp body 5, and the power supply assembly is placed in the lamp body 5, the power supply assembly includes an insulating housing 6 and a driving power supply 7 placed in the insulating housing 6. The insulating housing 6 is fixedly connected to the bottom of the flat-bottomed heat-conducting round platform, and the lamp holder 10 is attached to the insulating housing 6 away from the LED. One end of the light source assembly 3 is insulated from and fixed to the lamp body 5 , and the space between the inner wall of the insulating housing 6 and the driving power supply 7 is filled with a heat-conducting insulating potting 20 .

As shown in Figure 2 and Figure 3, the lampshade 1, the lamp body 5 and the heat conducting seat 4 are all provided with holes, and the holes 11 on the lampshade 1 are preferably evenly distributed on the annular circumferential surface near the outer edge with a certain inclination angle, The lamp body 5 is a cup-shaped heat dissipation shell made of aluminum or alloy material. The lamp body 5 is provided with a heat dissipation hole 51. The shape of the heat dissipation hole is circular. In other embodiments, the heat dissipation hole can also be configured The hole 41 on the heat conduction seat 4 is arranged on the part close to the outer edge of the seat, through the holes 11 and 51 on the lampshade and the lamp body, the heat generated in the lamp is quickly outward heat exchange with the external environment, in particular, holes 41 are also provided on the heat conduction seat 4, which correspond to the holes 11 and 51 on the lampshade and the lamp body to form an airflow channel inside the lamp, further accelerating the heat dissipation. out. The LED light source assembly 3 includes a light emitting diode assembly and a metal base circuit board for mounting the light emitting diode assembly. The optical lens module 2 is fixed on the surface of the metal-based circuit board by several positioning posts, and the lower end of the base of the optical lens module 2 is also provided with a positioning post and is fixed on the metal-based circuit board through the positioning posts. The lamp cap 10 is a metal interface, and is riveted on the insulating shell 6 through a riveted snap ring 9. An insulating washer 8 is provided between the lamp cap 10 and the lamp body 5, and the lamp body 5, the insulating shell 6 and the insulating washer 8 are fixed by clamping positions. The metal part of the lamp cap 10 is a universal lamp cap of any form, one of which is a copper nickel-plated high-frequency porcelain E-26 standard screw cap. The driving power supply 7 is composed of AC mains or low-voltage power supply constant current transformation control assembly or constant current source assembly, and one end is electrically connected to the metal base circuit board, and the other end is electrically connected to the terminal of the lamp holder.

The insulating housing 6 has a cylindrical structure, and a slot is formed by die-casting in the cavity, and the driving power supply 7 is inserted into the slot for positioning. The driving power supply 7 has a rectangular printed circuit base plate, and the outer edge of the upper end of the cylindrical insulating shell 6 is provided with a nut insert for fixing, which is fixed on the heat sink 4 by screws. The heat sink 4 can be made of a metal-based heat dissipation material or a ceramic-based heat dissipation material. It is flattened by machining and fixed with screws to fully fit the back of the top groove of the inner cavity of the lamp body 5 to obtain thermal conductivity. The lamp body 5 is provided with a circumferential groove for assembling and fixing the lampshade 1, the side wall of the groove is provided with threads, and the lampshade 1 is fixed in the groove of the lamp body 5 through a threaded structure; in other embodiments, the lampshade 1 can also be directly clamped into the groove of the lamp body 5 and fixed in the groove of the lamp body through colloid; or by providing a groove on the lamp body 5 for assembling and fixing the lampshade 1, a screw holes, the lampshade 1 is fixed in the groove of the lamp body 5 through a screw connection structure.

The space between the insulating housing 6 and the driving power 7 accommodated therein is filled with a heat-conducting potting compound 20, since the potting compound 20 is in contact with the driving power 7 and the insulating case 6 at the same time, it is beneficial for the driving power 7 to generate The heat from the potting compound 20 is transferred to the insulating housing 6 by heat conduction and dissipated outward by it. The heat dissipation effect is significantly improved compared with that of the prior art that is not filled with the potting compound. In addition, the potting compound 20 will drive the power supply 7. The heat generated by the electronic components on the circuit board is averaged, avoiding local high heat of individual components, prolonging the service life of the power supply, thereby improving the service life of the entire lamp. The heat-conducting potting glue adopts silicone flame-retardant and heat-conducting liquid potting glue. Before curing, the potting glue has good fluidity, moderate operating time, and convenient operation during use. After curing, it has small shrinkage rate and good high temperature resistance. Good flame retardancy, good thermal conductivity, good resistance to vulcanization reversion and good dielectric properties when used in airtight conditions at high temperatures.

Claims (8)

1. LED light fixture with high efficiency and heat radiation power supply module comprises lampshade, led light source assembly, lamp body, and the lamp holder of mutual combination, wherein; Said lamp body top is provided with heat-conducting seat; Said led light source assembly is fixed on heat-conducting seat flat, is formed with cavity in the said lamp body, and said power supply module places in the cavity of lamp body; It is characterized in that; Said power supply module comprises insulation shell and places the driving power in this insulation shell, insulation shell and said heat-conducting seat bottom Joint, and said lamp holder is secured on the end of insulation shell away from the led light source assembly; Be separated by with the insulation of said lamp body, fixing, be filled with the heat conduction casting glue in the space between insulation shell and ccontaining within it the driving power.

2. the LED light fixture with high efficiency and heat radiation power supply module according to claim 1 is characterized in that said insulation shell is a cylindrical structural, and die casting is formed with a slot in its cavity, and said driving power is inserted in location in the slot.

3. the LED light fixture with high efficiency and heat radiation power supply module according to claim 2; It is characterized in that: said driving power has rectangular printed chasis; Said cylindrical insulation shell upper end is provided with the fixing screw of using, and insulation shell is fixed in the heat-conducting seat bottom through screw.

4. according to the said LED light fixture of claim 1 with high efficiency and heat radiation power supply module; It is characterized in that; Be equipped with the louvre that is used to form light fixture and extraneous heat exchange on said lampshade and the lamp body, said heat-conducting seat is provided with the through hole that is used to form the gas channel in the light fixture.

5. the LED light fixture with high efficiency and heat radiation power supply module according to claim 1 is characterized in that the lamp holder of said LED light fixture is a metal interface, is riveted on all around on the insulation shell, and wherein the metal section and part of lamp holder is the versatility lamp holder.

6. described LED light fixture with high efficiency and heat radiation power supply module according to claim 1 is characterized in that said lamp body is provided with groove, and the structure that said lampshade spins through screw thread is fixed in the groove of said lamp body.

7. described LED light fixture with high efficiency and heat radiation power supply module according to claim 1 is characterized in that said lamp body is provided with groove, and said lampshade directly snaps fit onto in the groove of said lamp body and through colloid and is fixed in the lamp body groove.

8. described LED light fixture according to claim 1 with high efficiency and heat radiation power supply module; It is characterized in that; Said lamp body is provided with and is used to assemble and the groove of fastening lampshades, is provided with screw at bottom portion of groove, and lampshade is fixed in the groove of lamp body through the screw syndeton.

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