阅读说明：本技术 Led灯 (LED lamp ) 是由 宋稳亚 吴多良 张奇 王平原 唐俊 于 2019-04-08 设计创作，主要内容包括：本发明属于照明设备技术领域,尤其涉及一种LED灯,包括轴流风扇、灯板组件及灯罩；所述轴流风扇包括风扇框、风扇转子及风扇静叶,所述风扇静叶固定在所述风扇框上；所述灯板组件包括灯壳及LED模块,所述LED模块设置在所述灯壳内,所述灯壳的侧壁上设置有排气孔；所述风扇静叶设置在所述风扇转子与所述LED模块之间,所述风扇静叶设置有用于导流和散热的多个肋条,相邻的所述肋条之间形成与所述灯壳的排气孔连通的静叶空气流道,所述静叶空气流道的入口朝向所述风扇转子,所述静叶空气流道的出口朝向所述LED模块的散热面。本发明提供的LED灯,脱离风扇转子的冷气流只绕过一个障碍物(风扇静叶),减少了流动损失和噪音。(The invention belongs to the technical field of lighting equipment, and particularly relates to an LED lamp which comprises an axial flow fan, a lamp panel assembly and a lampshade; the axial flow fan comprises a fan frame, a fan rotor and a fan stationary blade, and the fan stationary blade is fixed on the fan frame; the lamp panel assembly comprises a lamp shell and an LED module, the LED module is arranged in the lamp shell, and exhaust holes are formed in the side wall of the lamp shell; the fan fixed blade is arranged between the fan rotor and the LED module, the fan fixed blade is provided with a plurality of ribs for guiding flow and dissipating heat, a fixed blade air flow channel communicated with the exhaust hole of the lamp shell is formed between the adjacent ribs, the inlet of the fixed blade air flow channel faces the fan rotor, and the outlet of the fixed blade air flow channel faces the heat dissipation surface of the LED module. According to the LED lamp provided by the invention, the cold air flow separated from the fan rotor only bypasses one obstacle (the fan stator blade), so that the flow loss and the noise are reduced.)

1. An LED lamp is characterized by comprising an axial flow fan, a lamp panel assembly and a lampshade, wherein the axial flow fan is arranged on one side of the lamp panel assembly, and the lampshade is arranged on the other side of the lamp panel assembly;

the axial flow fan comprises a fan frame, a fan rotor and a fan stationary blade, wherein the fan rotor is rotationally connected to the fan stationary blade, and the fan stationary blade is fixed on the fan frame;

the lamp panel assembly comprises a lamp shell and an LED module, the LED module is arranged in the lamp shell, and exhaust holes are formed in the side wall of the lamp shell;

the fan fixed blade is arranged between the fan rotor and the LED module, the fan fixed blade is provided with a plurality of ribs for guiding flow and dissipating heat, a fixed blade air flow channel communicated with the exhaust hole of the lamp shell is formed between the adjacent ribs, the inlet of the fixed blade air flow channel faces the fan rotor, the outlet of the fixed blade air flow channel faces the heat dissipation surface of the LED module, and airflow introduced by the fan rotor blows to the heat dissipation surface of the LED module through the fixed blade air flow channel and is exhausted from the exhaust hole.

2. The LED lamp of claim 1, wherein the LED module comprises a circuit board, an LED lamp bead and a heat conducting gasket, the heat conducting gasket is arranged in the lamp housing, one side surface of the circuit board is tightly attached to the heat conducting gasket, and the LED lamp bead is arranged on the other side surface of the circuit board;

the fan fixed blade is arranged between the fan rotor and the heat conduction gasket, the outlet of the fixed blade air flow channel faces the heat conduction gasket, and the surface of one side, away from the circuit board, of the heat conduction gasket is formed into a heat dissipation surface of the LED module.

3. The LED lamp of claim 1, wherein the fan blade includes a middle base block, an annular frame, and a plurality of ribs, inner ends of the ribs being connected to the middle base block, outer ends of the ribs being connected to the annular frame, a thickness of the annular frame being less than a thickness of the ribs, such that the ribs project toward the lamp housing relative to the annular frame.

4. The LED lamp of claim 3, wherein said ribs extend into said housing, and exhaust holes of said housing are disposed radially outward of said stationary blade air flow path along said axial fan.

5. The LED lamp of claim 4, wherein the ribs are disposed in abutment with or spaced from the thermal pad.

6. The LED lamp of claim 1, wherein the mouth of the lamp housing is fixed to a side of the lamp housing facing away from the axial fan.

7. The LED lamp of claim 6, wherein the mouth of the lamp housing is snap-fit to the lamp housing.

8. The LED lamp of claim 1, wherein the fan vane is fixedly attached to the lamp housing.

9. The LED lamp of claim 1, wherein the axial fan is a meridional accelerated axial fan.

10. The LED lamp of any one of claims 1 to 9, wherein the axial fan further comprises a protective mesh fixed to a side of the fan frame facing away from the fan rotor.

Technical Field

The invention belongs to the technical field of lighting equipment, and particularly relates to an LED lamp.

Background

With the development of lighting requirements, LED lamps tend to have high brightness and small volume. If power is too big, and the LED lamp only relies on heat conduction and natural convection heat dissipation, then the radiating efficiency is lower, can lead to the lamp pearl temperature rise too high and inefficacy. Thus, the power of the existing LED lamp cannot be made too large.

The existing high-power LED lamp considers the heat convection heat energy transfer mode adopting an axial fan. However, the problem of noise vibration of the axial flow fan is not considered, and the axial flow fan, the lamp housing, and the heat sink are independent from each other, so that space utilization is not optimized.

The axial flow fan of the existing high-power LED lamp only has movable blades and no fixed blades, and airflow brought by a fan rotor impacts on a radiating fin after passing through ribs of the fan and then flows out of the LED lamp to finish the exchange of cold and hot airflow. In the process, the airflow flowing out of the fan blades (the movable blades) passes through the two obstacles (the ribs and the radiating fins), the more the airflow passes through the rear obstacles, the higher the noise is, and therefore, the conventional LED lamp is easy to generate the noise problem. A gap is formed between the frame body and the lamp shell of the axial flow fan, the outlet discrete heat fins of the axial flow fan are far away, airflow possibly generates backflow in the space, space waste is generated, airflow turbulence is possibly caused, and heat dissipation efficiency is reduced.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the LED lamp is provided aiming at the problem that the existing high-power LED lamp is easy to generate noise.

In order to solve the technical problem, an embodiment of the invention provides an LED lamp, which includes an axial flow fan, a lamp panel assembly and a lampshade, wherein the axial flow fan is arranged on one side of the lamp panel assembly, and the lampshade is arranged on the other side of the lamp panel assembly;

the axial flow fan comprises a fan frame, a fan rotor and a fan stationary blade, wherein the fan rotor is rotationally connected to the fan stationary blade, and the fan stationary blade is fixed on the fan frame;

the lamp panel assembly comprises a lamp shell and an LED module, the LED module is arranged in the lamp shell, and exhaust holes are formed in the side wall of the lamp shell;

the fan fixed blade is arranged between the fan rotor and the LED module, the fan fixed blade is provided with a plurality of ribs for guiding flow and dissipating heat, a fixed blade air flow channel communicated with the exhaust hole of the lamp shell is formed between the adjacent ribs, the inlet of the fixed blade air flow channel faces the fan rotor, the outlet of the fixed blade air flow channel faces the heat dissipation surface of the LED module, and airflow introduced by the fan rotor blows to the heat dissipation surface of the LED module through the fixed blade air flow channel and is exhausted from the exhaust hole.

Optionally, the LED module includes a circuit board, LED beads and a heat conducting gasket, the heat conducting gasket is disposed in the lamp housing, a surface of one side of the circuit board is tightly attached to the heat conducting gasket, and the LED beads are disposed on a surface of the other side of the circuit board;

the fan fixed blade is arranged between the fan rotor and the heat conduction gasket, the outlet of the fixed blade air flow channel faces the heat conduction gasket, and the surface of one side, away from the circuit board, of the heat conduction gasket is formed into a heat dissipation surface of the LED module.

Optionally, the fan stationary blade includes middle base block, annular frame and a plurality of the rib, the inner of rib is connected on the middle base block, the outer end of rib is connected on the annular frame, the thickness of annular frame is less than the thickness of rib, so that the rib is relative annular frame orientation the lamp body protrusion.

Optionally, the rib extends into the lamp housing, and the exhaust hole of the lamp housing is disposed outside the stationary blade air flow passage in the radial direction of the axial flow fan.

Optionally, the rib is abutted against or spaced from the heat conducting gasket.

Optionally, the mouth of the lamp housing is fixed to a side of the lamp housing facing away from the axial flow fan.

Optionally, the mouth of the lamp housing is in snap-fit connection with the lamp housing.

Optionally, the fan vane is fixedly connected to the lamp housing.

Optionally, the axial fan is a meridional acceleration axial fan.

Optionally, the axial fan further comprises a protective net fixed on the fan frame on a side facing away from the fan rotor.

According to the LED lamp provided by the embodiment of the invention, the fan stationary blade is arranged between the fan rotor and the LED module, the fan stationary blade is provided with a plurality of ribs for guiding and radiating, a stationary blade air flow channel communicated with the exhaust hole of the lamp housing is formed between the adjacent ribs, the inlet of the stationary blade air flow channel faces the fan rotor, and the outlet of the stationary blade air flow channel faces the radiating surface of the LED module. The LED module generates a large amount of heat during working, cold fluid introduced by the fan rotor doing work can rapidly mutually convect with hot air near the radiating surface of the LED module, so that the hot air is exhausted from the exhaust hole of the lamp shell, and the temperature on the LED module is reduced. And fan quiet leaf has the heat dissipation function concurrently (fan quiet leaf uses as the fin simultaneously), and after the cold air current broke away from the movable blade of fan rotor, can get into fan quiet leaf very fast, the heat of the LED module that fan quiet leaf absorbed meets with the cold air current that flows through fan quiet leaf, and convection efficiency is higher, has effectually prevented the inefficacy that the LED module temperature rise is too high to cause, and heat dissipation efficiency improves greatly, and the air current is more smooth and easy. In addition, the cold airflow separated from the movable blades of the fan rotor only bypasses one obstacle (the fan stationary blade) in the process, so that the flow loss and the noise are effectively reduced, meanwhile, the contact between the airflow and the LED module is increased, and the efficiency of convection heat dissipation is enhanced.

Drawings

FIG. 1 is a schematic diagram of an LED lamp according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an LED lamp according to one embodiment of the present invention;

FIG. 3 is an exploded view of an LED lamp according to an embodiment of the present invention;

FIG. 4 is a schematic view of a fan rotor of an LED lamp according to an embodiment of the present invention;

FIG. 5 is a schematic view of a fan vane of an LED lamp provided in accordance with an embodiment of the present invention;

FIG. 6 is another perspective view of FIG. 5;

fig. 7 is a schematic view of a protective net of LED lamps according to an embodiment of the present invention;

fig. 8 is a schematic view of a lamp housing of an LED lamp according to an embodiment of the invention;

fig. 9 is a schematic diagram of an LED module of an LED lamp according to an embodiment of the present invention.

The reference numerals in the specification are as follows:

1. an axial flow fan; 11. a fan frame; 12. a fan rotor; 13. a fan stationary blade; 131. a rib; 132. an intermediate base block; 133. an annular frame; 14. a protective net; 15. a stationary blade air flow path;

2. a lamp panel assembly; 21. a lamp housing; 211. an exhaust hole; 22. an LED module; 221. a circuit board; 222. LED lamp beads; 223. a thermally conductive gasket;

3. a lamp shade;

4. a first pin;

5. a second pin;

6. a third pin;

7. and a fourth pin.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 3, an embodiment of the present invention provides an LED lamp, including an axial flow fan 1, a lamp panel assembly 2, and a lamp shade 3, where the axial flow fan 1 is disposed on one side of the lamp panel assembly 2, and the lamp shade 3 is disposed on the other side of the lamp panel assembly 2.

The axial flow fan 1 is preferably a meridional acceleration axial flow fan. The common axial flow fan has a large volume, and compared with a meridian acceleration axial flow fan with the same specification, the rotating speed is high (the rotating speed is high, and the service life is short), so that the LED lamp adopting the common axial flow fan can increase the cost of later maintenance due to the damage of the fan. The meridian acceleration axial flow fan is adopted, so that the later maintenance cost can be reduced.

The axial flow fan 1 is additionally provided with forced convection heat dissipation, so that the heat dissipation efficiency is greatly improved, and the research and development of high-brightness LED lamps (high-power LED lamps) are realized.

In one embodiment, the axial fan 1 includes a fan frame 11, a fan rotor 12 and fan vanes 13, wherein the fan rotor 12 is rotatably connected to the fan vanes 13. When the fan rotor 12 is powered on, the fan rotor can rotate relative to the fan stator blade 13 to apply work to air, so that cold airflow is introduced, the efficiency of convection heat dissipation is enhanced, and the following LED modules 22 of the lamp panel assembly 2 are cooled. The fan stator blade 13 is fixed to the fan frame 11. For example, the fan vanes 13 may be fixed to the fan frame 11 by means of a snap connection.

The structure of the fan blades 12 is shown in fig. 4.

The fan stator blade 13 may also be fixed to the fan frame 11 by other means as long as the stable connection of the fan stator blade 13 and the fan frame 11 is ensured.

In one embodiment, the axial fan 1 further includes a protective mesh 14 fixed to the fan frame 11 on a side facing away from the fan rotor 12. For example, the protection net 14 is locked to the fan frame 11 by the first pin 4 and the second pin 5.

The protective net 14 can also be locked on the fan frame 11 by other methods as long as the stable connection of the protective net 14 and the fan frame 11 is ensured.

As shown in fig. 7, the protection net 14 is a hollow grid. The protective net 14 may be in a ring shape or other shapes, and the protective net 14 needs to ensure that fluid can smoothly pass through the protective net, has a certain backflow effect, and can prevent foreign matters from entering the fan rotor 12 to protect the movable blades. In addition, the damage caused by the fingers of the user touching the movable blades can be prevented.

In an embodiment, as shown in fig. 1, 3 and 9, the lamp panel assembly 2 includes a lamp housing 21 and an LED module 22, the LED module 22 is disposed in the lamp housing 21, and a gas exhaust hole 211 is disposed on a side wall of the lamp housing 21.

The exhaust holes 211 are used for smooth outflow of hot air, so that the hot air in the LED lamp is rapidly exhausted to the outside of the LED lamp. The discharge holes 211 include, but are not limited to, circular holes, square holes, etc. In addition, the exhaust hole 211 may be provided in plurality around the sidewall of the lamp housing 21.

The fan stator blade 13 is disposed between the fan rotor 12 and the LED module 22, the fan stator blade 13 is provided with a plurality of ribs 131 for guiding and dissipating heat, a stator blade air flow channel 15 communicated with the exhaust hole 211 of the lamp housing 21 is formed between adjacent ribs 131, an inlet of the stator blade air flow channel 15 faces the fan rotor 12, an outlet of the stator blade air flow channel 15 faces the heat dissipation surface of the LED module 22, and an airflow introduced by the fan rotor 12 blows to the heat dissipation surface of the LED module 22 through the stator blade air flow channel 15 and is exhausted from the exhaust hole 211, thereby achieving convective heat transfer.

The cross-sectional airfoils of the ribs 131 of the fan vanes 13 include, but are not limited to, NACA4 series, NACA5 series, NACA6 series, and supercritical airfoils. The angle, shape and curvature of the ribs 131 are designed according to different requirements. The fan stationary blade 13 is designed to guide and dissipate heat, and to increase a heat dissipation area and reduce noise.

The blade airfoil of the fan rotor 12 includes, but is not limited to, NACA4 series, NACA5 series, NACA6 series, and supercritical airfoil, and the angle, shape, and curvature of the blade are designed according to different requirements. The movable blades have the design requirements that static pressure can be improved, enough air quantity is provided, and cold fluid is brought into the LED lamp to finish convection heat dissipation.

Through the design of the movable blades and the ribs 131 with different angles and shapes, various power requirements of the LED lamp can be met. In this way, the LED lamp can operate at a suitable temperature, contributing to an extension of its service life. Therefore, the LED lamp not only can increase the power and the brightness of the LED lamp, but also can prolong the service life of the LED lamp.

As shown in fig. 2, 3 and 9, the LED module 22 includes a circuit board 221, LED beads 222 and a heat conducting gasket 223, the heat conducting gasket 223 is disposed in the lamp housing 21, one side surface of the circuit board 221 is tightly attached to the heat conducting gasket 223, and the LED beads 222 are disposed on the other side surface of the circuit board 221.

The fan stator blade 13 is disposed between the fan rotor 12 and the heat conducting pad 223, the outlet of the stator blade air flow passage 15 faces the heat conducting pad 223, and a side surface of the heat conducting pad 223 facing away from the circuit board 221 is formed as a heat radiating surface of the LED module 22.

The thermal pad 223 includes, but is not limited to, a circular pad. Besides heat conduction, the mosquito-proof effect can be achieved.

LED light bead 222, including but not limited to an axial array of rectangular light sources.

As shown in fig. 3, the lampshade 3 is a globe. However, the shape of the lamp shade 3 is not limited to this, and the lamp shade 3 is provided with a reflecting curved surface, so that the LED lamp bead 222 emits light patterns for diverging illumination to both sides and the periphery.

LED lamp pearl 222 passes through 3 secondary grading of lamp shade, makes people's eye vision more comfortable, reaches the demand of comfortable illumination. Due to the fact that the lamp shade is connected through the buckle, the lamp shade 3 can be directly opened during maintenance, maintenance of the LED lamp is conducted, and convenience and rapidness are achieved.

As shown in fig. 2, the rib 131 extends into the lamp housing 21, and the exhaust hole 211 of the lamp housing 21 is disposed outside the vane air flow passage 15 in the radial direction of the axial flow fan 1.

As shown in fig. 5 and 6, the fan vane 13 includes a middle base block 132, an annular frame 133, and a plurality of ribs 131, an inner end of each rib 131 is connected to the middle base block 132, an outer end of each rib 131 is connected to the annular frame 133, and a thickness of the annular frame 133 is smaller than a thickness of the rib 131, so that the rib 131 protrudes toward the lamp housing 21 relative to the annular frame 133, so that the rib 131 extends into the lamp housing 21.

In one embodiment, the ribs 131 abut against the thermal pad 223.

However, according to actual needs, the ribs 131 and the heat conductive pad 223 may be disposed at intervals, that is, a gap is left between the ribs 131 and the heat conductive pad 223.

The mouth of the lampshade 3 is fixed on one side of the lamp housing 21 departing from the axial flow fan 1. For example, the mouth of the lamp housing 3 is snap-fitted to the lamp housing 21.

The lampshade 3 can also be fixedly connected with the lamp shell 21 in other modes, as long as the stable connection between the lampshade 3 and the lamp shell 21 is ensured.

In one embodiment, the fan vane 13 and the lamp housing 21 are fixedly connected by a third pin 6 and a fourth pin 7.

The fan stationary blade 13 can also be fixedly connected with the lamp housing 21 in other manners as long as the stable connection between the fan stationary blade 13 and the lamp housing 21 is ensured.

The LED lamp provided by the embodiment of the invention has the following assembling process:

(1) and (4) assembling the axial flow fan 1. The fan rotor 12 and the fan stator 13 are assembled together, then the fan frame 11 and the fan stator 13 are assembled together by snap connection, and the protective net 14 and the fan frame 11 are locked by the first pin 4 and the second pin 5. The axial flow fan 1 is assembled.

(2) And assembling the lamp panel assembly 2 and the lampshade 3. Firstly, the heat conducting gasket 223 is placed in the lamp shell 21 and is positioned through the designed positioning point; the combination of the circuit board 221 and the LED lamp bead 222 is tightly attached to the heat conducting gasket 223 and placed in the lamp housing 5 (the circuit board 221 is tightly attached to the heat conducting gasket 223), and is positioned by the design positioning point; the lampshade 3 and the lamp housing 21 are fixed together by a buckle, and the lampshade 3 also plays a role of fixing the LED module 22. And the lamp panel component 2 and the lampshade 3 are assembled.

(3) The axial fan 1 and the lamp panel assembly 2 are assembled, the fan stationary blade 13 and the lamp housing 21 are assembled together through the third pin 6 and the fourth pin 7, and the whole LED lamp is assembled.

The working principle of the LED lamp provided by the embodiment of the invention is as follows:

the fan rotor 12 rotates to apply work to drive air to flow, the air outside the LED lamp enters the movable blades (blades of the fan rotor 12) of the axial fan 1 through the protective mesh 14, the fluid flow speed is increased by the fan rotor 3, and the fluid flows into the fan stationary blades 12 along the axial direction of the axial fan 1. The fan rotor 12 works to drive the large-flow cold fluid to enter the LED lamp.

When the LED lamp beads 222 are lit, a large amount of heat is generated, and this portion of heat is transferred to the side of the heat conductive gasket 223 using the circuit board 211 as a medium, so that the heat flux density around the heat conductive gasket 223 becomes large, and the temperature rises. The cold fluid brought into the LED lamp by the work of the fan rotor 12 can rapidly convect with the air around the heat conductive pad 223, so that the hot air is discharged from the exhaust holes 211 on the side wall of the lamp housing 21, thereby lowering the temperature of the LED module 22.

The fin is fan quiet leaf promptly, and after the air current broke away from the movable vane, entering fin that can be very fast, the lamp body heat that the fin absorbed meets with the cold air current that flows through the radiator, and convection efficiency is higher, has effectually prevented the lamp body temperature rise inefficacy that arouses, and the radiating efficiency improves greatly, and the air current is more smooth and easy, and fan noise also can be less relatively. The rotating speed of the fan rotor 3 can be adjusted or other types of fans can be selected according to different powers of the lamp body.

Because the fan stationary blade 13 has the heat dissipation function (the fan stationary blade 13 is used as the heat dissipation fin at the same time), after the cold airflow is separated from the movable blade of the fan rotor 12, the cold airflow can quickly enter the fan stationary blade 13, the heat of the LED module 22 absorbed by the fan stationary blade 13 meets the cold airflow flowing through the fan stationary blade 13, the convection efficiency is higher, the failure caused by the overhigh temperature rise of the LED module 22 is effectively prevented, the heat dissipation efficiency is greatly improved, and the airflow is smoother. In addition, the cold airflow separated from the blades of the fan rotor 12 only bypasses one obstacle (the fan stationary blade 13) in the process, so that the flow loss and the noise are effectively reduced, meanwhile, the contact between the airflow and the LED module 22 is increased, and the efficiency of convection heat dissipation is enhanced.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.