Heat dissipation device of LED lamp

Abstract

The utility model relates to the technical field of lamps, and discloses a heat dissipation device of an LED lamp, which comprises a mounting plate, a heat dissipation fan and a plurality of heat dissipation fin plates are fixedly mounted on the mounting plate, and the heat dissipation fin plates surround the heat dissipation fan in a circumferential array; the end, close to the center of the array, of each heat dissipation fin plate is provided with a penetrating type receding groove in the circumferential direction of the circumferential array, and fan blades of the heat dissipation fan penetrate through the receding grooves. A heat dissipation cavity is formed in each heat dissipation fin plate, and each heat dissipation cavity is provided with a hot air inlet, a cold air inlet and a hot air outlet; each hot air inlet communicates with the corresponding receding groove, each cold air inlet is formed in the end, away from the center of the array, of the corresponding heat dissipation fin plate, and each hot air outlet is formed in the end, away from the mounting plate, of the corresponding heat dissipation fin plate. According to the Bernoulli principle, when hot air is exhausted, cold air enters the heat dissipation cavity, so that the gas flowability is improved, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lamps, in particular to a heat dissipation device for an LED lamp. Background Art

[0002] LED lamps are devices that transmit, distribute, and alter the light distribution of LED light sources. In addition to the LED light source, they include all parts and components required to secure and protect the LED light source, as well as the wiring accessories necessary for connecting to a power source. As LED technology matures, LEDs will achieve even greater development in the design and development of residential lighting fixtures, fully embodying the development trends of energy-saving, healthy, artistic, and user-friendly lighting, and becoming a dominant force in residential lighting culture.

[0003] Announcement No.: CN219389649U describes a heat dissipation structure of an LED lamp, including a connecting base, a heat dissipation fin and a low-speed motor provided on the top of the connecting base, a plurality of heat dissipation fins provided and equidistantly distributed in a circumferential manner on the top edge of the connecting base, the low-speed motor is provided in the middle position inside the ring composed of the heat dissipation fins and is fixedly connected to the connecting base, and a fan blade is fixed on the output end of the low-speed motor; the utility model installs a low-speed motor inside a hollow cylindrical structure surrounded by the heat dissipation fins, and installs fan blades on the low-speed motor, and when the low-speed motor drives the fan blades to rotate, an airflow is generated that is ejected upward along the center position of the hollow cylindrical structure surrounded by the heat dissipation fins, and at the same time, the outside air flows to the center position through the gap below the heat dissipation fins.

[0004] Announcement No.: CN220287372U describes an LED lamp housing, comprising a mounting base, a mounting portion, an LED lamp tube and a lampshade; the mounting portion is connected to the mounting base, the mounting portion and the mounting base are coaxially distributed, a support assembly for mounting the LED lamp tube is provided in the mounting portion, the mounting base is provided with a plurality of mounting holes, and the plurality of mounting holes are evenly distributed around the circumference of the mounting base; the lampshade is connected to the lower end of the mounting portion, and the lampshade and the mounting portion are coaxially distributed.

[0005] Based on the above technical features, the problem that arises is that in the existing technology, due to the dense arrangement of the heat dissipation fins and heat dissipation holes, the air flow is blocked and the fluidity is poor, thereby greatly reducing the heat dissipation efficiency.

[0006] Therefore, it is necessary to solve the above problems by using a heat dissipation device for LED lamps. Utility Model Content

[0007] The purpose of the present invention is to provide a heat dissipation device for an LED lamp to solve the problems raised in the above background technology.

[0008] To achieve the above object, the utility model provides the following technical scheme: A heat dissipation device of LED lamp, including mounting plate, the mounting plate fixedly installs heat dissipation fan and multiple heat dissipation fin plates, and multiple heat dissipation fin plates are arranged around heat dissipation fan in the form of circular array, the end of each heat dissipation fin plate close to array center is provided with through type accommodation slot along the circumference of circular array, and the fan blade of heat dissipation fan passes through accommodation slot, a heat dissipation cavity is formed in each heat dissipation fin plate, and each heat dissipation cavity is provided with hot air inlet, cold air inlet and hot air outlet, wherein each hot air inlet is communicated with accommodation slot, each cold air inlet is formed in the end of heat dissipation fin plate away from array center, and each hot air outlet is formed in the end of heat dissipation fin plate away from mounting plate.

[0009] Preferably, the cross-sectional area of the cold air inlet is greater than the cross-sectional area of the hot air outlet.

[0010] Preferably, two wire terminals are fixedly arranged on the mounting plate, and the two wire terminals are connected to the circuit of the circuit board of the LED lamp through wires; the positive and negative poles of the motor of the heat dissipation fan are electrically connected to one wire terminal.

[0011] Preferably, a plurality of mounting holes are formed in the mounting plate, a plurality of studs are fixedly arranged on the lamp panel of the LED lamp, and the plurality of studs correspond to the plurality of mounting holes one by one; each stud passes through the corresponding mounting hole and is connected to the mounting plate through a matching nut.

[0012] Preferably, each heat dissipation fin plate penetrates the mounting plate and is in contact with the lamp panel of the LED lamp.

[0013] Preferably, a heat dissipation ridge is fixedly arranged in the heat dissipation cavity of each heat dissipation fin plate.

[0014] The utility model discloses a technical effect and advantage:

[0015] First, the heat dissipation fin plate is provided with a heat dissipation cavity, which increases the heat dissipation area of the heat dissipation fin plate; at the same time, the heat dissipation cavity has a cold air inlet, a hot air inlet and a hot air outlet; during heat dissipation, the heat dissipation fan blows hot air into the heat dissipation cavity through the hot air inlet, and the hot air is discharged through the hot air outlet; at this time, the gas flow rate at the hot air outlet is relatively fast; according to Bernoulli's principle, cold air enters the heat dissipation cavity through the cold air inlet for air cooling and heat dissipation, and finally the hot air is discharged from the hot air outlet; such a cycle of air cooling and heat dissipation improves the gas flowability and greatly improves the heat dissipation effect.

[0016] Second, the heat dissipation ridge is fixedly arranged in the heat dissipation cavity, which greatly increases the heat dissipation area and improves the heat dissipation capacity. DRAWINGS

[0017] Figure 1A three-dimensional structure schematic view of the embodiment one of the utility model;

[0018] Figure 2 A heat dissipation fan schematic view of the embodiment one of the utility model;

[0019] Figure 3 A partial sectional view schematic view of the embodiment one of the utility model;

[0020] Figure 4 A heat dissipation fin plate schematic view of the embodiment two of the utility model.

[0021] In the drawing: 1, mounting plate, 2, mounting hole, 3, terminal, 4, motor, 5, fan blade, 6, heat dissipation fin plate, 7, cold air inlet, 8, hot air outlet, 9, hot air inlet, 10, heat dissipation convex strip. Specific implementation

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments, based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0023] Embodiment one: the utility model provides a kind of heat dissipation device of LED lamp as Figures 1 to 3 As shown in the drawing, it includes mounting plate 1.Several mounting holes 2 are opened on mounting plate 1, and several mounting holes 2 are evenly distributed on mounting plate 1.Several studs are fixedly arranged on the lamp panel of LED lamp, and several studs are one-to-one corresponding with several mounting holes 2.Each stud passes through the corresponding mounting hole 2, and a matching nut is threadedly connected to each stud.The nut fixes mounting plate 1 on several studs, which is prior art and will not be described here.

[0024] Heat dissipation fan is installed on mounting plate 1, and the heat dissipation fan includes motor 4 and fan blade 5, and motor 4 is fixedly arranged on mounting plate 1, and the output shaft of motor 4 is drivingly connected to fan blade 5, which is used for air cooling.

[0025] Two terminals 3 are fixedly arranged on mounting plate 1, and the two terminals 3 are connected to the circuit of the circuit board of the LED lamp through wires.The positive and negative poles of motor 4 are electrically connected to one terminal 3 respectively, which is used for power supply for motor 4.

[0026] A plurality of heat dissipation fin plates 6 are fixedly installed on mounting plate 1, and the plurality of heat dissipation fin plates 6 are arranged around the heat dissipation fan, and the center axis of motor 4 is taken as the array center line to be circularly arrayed distributed.Each heat dissipation fin plate 6 penetrates mounting plate 1 and contacts the lamp panel of LED lamp.

[0027] Each of the heat dissipation fins 6 is provided with a through-type accommodation slot at the end close to the array center line along the circumferential direction of the circumferential array. The fan blade 5 is located in the accommodation slot and rotates through the accommodation slot for rotation of the fan blade 5.

[0028] Each of the heat dissipation fins 6 is provided with a heat dissipation cavity matching the profile of the heat dissipation fin 6 to ensure uniform heat dissipation. Each of the heat dissipation fins 6 is provided with a hot air inlet 9, a cold air inlet 7 and a hot air outlet 8.

[0029] The hot air inlet 9, the cold air inlet 7 and the hot air outlet 8 are in communication with the heat dissipation cavity. The hot air inlet 9 is in communication with the accommodation slot and is located at the side of the fan blade 5 away from the mounting plate 1. The cold air inlet 7 is provided at the end of the heat dissipation fin 6 away from the array center line. The hot air outlet 8 is provided at the end of the heat dissipation fin 6 away from the mounting plate 1. Thus, a gas flow path is formed.

[0030] The cross-sectional area of the cold air inlet 7 is greater than that of the hot air outlet 8. According to Bernoulli's principle, the gas flow rate through the hot air outlet 8 is greater than that through the cold air inlet 7.

[0031] The lampshade of the LED lamp is provided with a gas-permeable hole corresponding to the heat dissipation fan to ensure that hot air can be blown out of the LED lamp.

[0032] Working principle of embodiment one: during heat dissipation, the output shaft of the motor 4 drives the fan blade 5 to rotate to perform air cooling. During this process, part of the hot air in the cylindrical air outlet channel formed by all the heat dissipation fins 6 is blown out through the cylindrical air duct, and the other part is blown into the heat dissipation cavity through the hot air inlet 9 on the heat dissipation fin 6 from the accommodation slot by the fan blade 5.

[0033] During this process, the hot air blown into the heat dissipation cavity is discharged through the hot air outlet 8. During this process, the hot air outlet 8 and the hot air inlet 9 are in direct contact along the gas flow direction.

[0034] During the process of discharging hot air from the hot air outlet 8, according to Bernoulli's principle, the gas flow rate at the hot air outlet 8 is fast and the gas pressure is low. At this time, due to the increase in the temperature of the gas in the heat dissipation cavity, the gas pressure is high, so that the gas in the heat dissipation cavity that has absorbed heat is discharged through the hot air outlet 8. After the hot air in the heat dissipation cavity is discharged, the gas is reduced and the gas pressure is lowered. Thereafter, the cold air outside enters the heat dissipation cavity through the cold air inlet 7 to dissipate heat from the heat dissipation fin 6. The cold air absorbs heat again to form high-pressure hot air, which is then discharged through the hot air outlet 8. Thus, a gas flow path is formed, and effective air cooling and heat dissipation are achieved.

[0035] When the hot air is blown out through the cylindrical air duct, the gas in the cylindrical air duct is reduced, the air pressure is lowered, the cold air enters the cylindrical air duct through the gap between the two adjacent heat dissipation fins 6, thereby forming a gas flow passage, and effective air cooling heat dissipation is realized.

[0036] Embodiment two: the utility model provides a heat dissipation device of LED lamps and lanterns as shown in the figure, the difference between this embodiment and embodiment one lies in that a plurality of heat dissipation convex strips 10 are arranged in the heat dissipation cavity of the heat dissipation fin 6, and all the heat dissipation convex strips 10 are fixedly connected with the heat dissipation fin 6. The plurality of heat dissipation convex strips 10 are parallel to each other and orderly arranged along the contour of the heat dissipation cavity in the heat dissipation fin 6, so as to expand the heat dissipation area of the heat dissipation fin 6. Figure 4

[0037] The working principle of embodiment two: the difference between this working principle and embodiment one lies in that when heat dissipation is carried out, the heat dissipation convex strip 10 can accelerate the loss of heat and improve the heat dissipation efficiency.

[0038] The other working processes of this embodiment are the same as those of embodiment one, and will not be described in detail here.

[0039] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. within the spirit and principles of the utility model, should be contained in the protection scope of the utility model.​

Claims

1. A heat dissipation device for an LED lamp, comprising a mounting plate (1), characterized in that: A heat dissipation fan and a plurality of heat dissipation fins (6) are fixedly mounted on the mounting plate (1), and the plurality of heat dissipation fins (6) are arranged in a circular array around the heat dissipation fan; a through-type clearance groove is provided at the end of each heat dissipation fin (6) close to the center of the array along the circumference of the circular array, and the fan blades (5) of the heat dissipation fan pass through the clearance groove; a heat dissipation cavity is provided in each heat dissipation fin (6), and each heat dissipation cavity is provided with a hot air inlet (9), a cold air inlet (7) and a hot air outlet (8); wherein each hot air inlet (9) is connected to the clearance groove, each cold air inlet (7) is provided at the end of the heat dissipation fin (6) away from the center of the array, and each hot air outlet (8) is provided at the end of the heat dissipation fin (6) away from the mounting plate (1).

2. The heat dissipation device for an LED lamp according to claim 1, characterized in that: The cross-sectional area of ​​the cold air inlet (7) is greater than the cross-sectional area of ​​the hot air outlet (8).

3. The heat dissipation device for an LED lamp according to claim 1, characterized in that: Two wiring terminals (3) are fixedly arranged on the mounting plate (1), and both wiring terminals (3) are connected to the circuit of the circuit board of the LED lamp through wires; the positive and negative poles of the motor (4) of the cooling fan are each electrically connected to a wiring terminal (3).

4. The heat dissipation device for an LED lamp according to claim 1, characterized in that: A plurality of mounting holes (2) are provided on the mounting plate (1), and a plurality of studs are fixedly arranged on the lamp plate of the LED lamp, and the plurality of studs correspond to the plurality of mounting holes (2) one by one; each stud passes through the corresponding mounting hole (2) and is connected to the mounting plate (1) via a matching nut.

5. The heat dissipation device for an LED lamp according to claim 4, characterized in that: Each of the heat dissipation fins (6) penetrates the mounting plate (1) and contacts the lamp panel of the LED lamp.

6. The heat dissipation device for an LED lamp according to claim 1, characterized in that: A heat dissipation ridge (10) is fixedly provided in the heat dissipation cavity of each heat dissipation fin plate (6).

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