CN204420937U - A high-power LED industrial and mining lamp heat sink based on the chimney effect principle - Google Patents

Abstract

The utility model discloses a high-power LED industrial and mining lamp radiator based on chimney effect principle, including PCB base plate and drive mounting panel, evenly be provided with a plurality of rib pipes based on chimney effect principle is radiating between PCB base plate and the drive mounting panel, and rib socle end is equipped with the air intake, and the air intake all sets up outwards, has utilized the chimney effect principle to inhale the rib intraductally with cold air, has strengthened the air flow speed, has improved the radiating efficiency, the utility model relates to a LED light heat dissipation technical field.

Description

A high-power LED industrial and mining lamp heat sink based on the chimney effect principle

technical field

The utility model relates to the technical field of heat dissipation of LED lighting lamps, in particular to a radiator for high-power LED industrial and mining lamps based on the chimney effect principle.

Background technique

LED is an injection-type electroluminescent element, which has the characteristics of high luminous efficiency, environmental protection, long life, strong directionality, and good color rendering. It has been widely used in display, decoration, road and some special lighting fields. The photoelectric conversion efficiency of LED is 10% to 25%, and 75% to 90% of the energy is converted into heat energy. With the development of high integration of LED, the calorific value increases linearly, and the temperature of the chip increases, resulting in a decrease in the performance of the light source. Therefore, the problem of heat dissipation is one of the key technical bottlenecks in the development of LEDs.

Utility model content

In order to solve the above problems, the utility model provides a high-power LED high bay lamp heat sink based on the chimney effect principle that improves the heat dissipation efficiency of high bay lamps and can greatly save costs.

The technical scheme that the utility model solves its technical problem adopts is:

A heat sink for high-power LED industrial and mining lamps based on the chimney effect principle, including a PCB substrate and a driver installation board. A number of rib tubes based on the chimney effect principle are evenly arranged between the PCB substrate and the driver installation board. The air outlet and the air inlet are all set outwards.

As a further improvement of the technical solution of the utility model, several fins are uniformly arranged on each rib tube along the outer wall of the rib tube.

As a further improvement of the technical solution of the utility model, the area of the air inlet is 1 to 5 times the diameter of the rib tube.

As a further improvement of the technical solution of the utility model, several connection holes are provided on the PCB substrate, and each rib tube is inserted into each connection hole.

As a further improvement of the technical solution of the utility model, the top of the rib tube and the drive mounting plate are provided with a space conducive to air flow.

As a further improvement of the technical solution of the utility model, the PCB substrate is also provided with cross support ribs for supporting the drive mounting plate, and the rib tubes are evenly distributed in the space formed by the PCB substrate and the cross support ribs.

As a further improvement of the technical solution of the present utility model, the PCB substrate is circular, and three rings of ribbed tubes are arranged from the inside to the outside along the circular surface of the PCB substrate. The number of rib tubes in the outer ring is root.

As a further improvement of the technical solution of the utility model, the materials of the rib tubes and the fins are aluminum alloy, heat-conducting plastic or copper.

Beneficial effects of the utility model: the high-power LED industrial and mining lamp radiator based on the principle of chimney effect has an air inlet at the bottom of the rib tube, and utilizes the principle of chimney effect to suck cold air into the rib tube, thereby enhancing the air flow speed and improving the Heat dissipation efficiency, at the same time, the hollow rib tube structure increases the heat dissipation surface area, which greatly saves the material cost of the radiator while meeting the same heat dissipation requirements. Setting the air inlet to the outside can effectively promote the smooth flow of air and further improve the heat radiation.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is a schematic diagram of the overall structure of the utility model embodiment;

Fig. 2 is a cross-sectional view of the overall structure of the utility model embodiment;

3 is a top view of the PCB substrate according to the embodiment of the present invention;

Fig. 4 is a schematic diagram of installation of the drive mounting board and the PCB substrate described in the embodiment of the present invention;

Fig. 5 is a front view of the ribbed tube according to the embodiment of the present invention;

Fig. 6 is a left side view of the ribbed tube in the embodiment of the present invention;

Fig. 7 is the second embodiment of the ribbed tube according to the embodiment of the utility model.

Detailed ways

The idea, specific structure and technical effects of the present utility model will be clearly and completely described below in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, characteristics and effects of the present utility model. Apparently, the described embodiments are only some of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without paying creative efforts, All belong to the protection scope of the utility model.

Referring to Figures 1 to 7, the utility model is a high-power LED industrial and mining lamp heat sink based on the principle of the chimney effect, including a PCB substrate 1 and a drive mounting plate 2, and a number of The rib tube 5 for heat dissipation based on the chimney effect principle, the bottom end of the rib tube 5 is provided with an air inlet 6, and the air inlet 6 is all set outward.

As a preferred embodiment of the present invention, a plurality of fins 7 are uniformly arranged on each rib tube 5 along the outer wall of the rib tube 5 .

As a preferred embodiment of the present invention, the area of the air inlet 6 is 1 to 5 times the diameter of the rib tube 5 .

As a preferred embodiment of the present invention, the PCB substrate 1 is provided with several connection holes 4 , and each rib tube 5 is inserted into each connection hole 4 .

The rib tube 5 is connected to the PCB substrate 1 by welding.

As a preferred embodiment of the present invention, the top end of the rib tube 5 and the driving mounting plate 2 are provided with a space conducive to air flow.

As a preferred embodiment of the present invention, the PCB substrate 1 is also provided with cross support ribs 3 for supporting the driving mounting plate 2 , and the rib tubes 5 are evenly distributed in the space formed by the PCB substrate 1 and the cross support ribs 3 .

The drive mounting plate 2 is fixedly mounted on the cross support rib 3 by screws.

As a preferred embodiment of the present utility model, the PCB substrate 1 is circular, and three rings of ribbed tubes 5 are provided from the inside to the outside along the circular surface of the PCB substrate 1. The number of ribbed tubes 5 in the inner ring is 4, and the ribbed tubes in the middle ring The number of 5 is 8, and the number of rib tubes 5 on the outer ring is 16.

As a preferred embodiment of the present invention, the material of the rib tube 5 and the fin 7 is aluminum alloy, heat-conducting plastic or copper.

In a preferred embodiment of the utility model, the ribbed tube 5 is a hollow tubular structure with a height of 150-165 mm, an inner diameter of 18 mm, and an outer diameter of 20-22 mm. The bottom of the ribbed tube 5 has an air inlet 6, which is a rectangular structure. The width of the air inlet 6 is consistent with the outer diameter of the rib tube 5, and its height is 1.2 to 3 times the inner diameter of the rib tube. The opposite side of the air inlet of the rib tube 5 is provided with a fin 7. In this preferred embodiment, the number of the fin 7 is one piece. The width is 18-24mm. The rib tubes 5 are evenly distributed along the radial direction and circumference of the PCB substrate 1. Preferably, the number of rib tubes 5 is divided into three layers from the inside to the outside. The first layer is 4, the second layer is 8, and the third layer is 16. , wherein the distance from the first layer to the center of the PCB substrate 1 is one-third of the radius of the PCB substrate 1, the distance from the second layer to the center of the PCB substrate 1 is two-thirds of the radius of the PCB substrate 1, and so on. The installation direction of the rib tube 5 is: the air inlet 6 faces outward, and the fin 7 faces inward. The PCB substrate 1 and the cross support rib 3 are integrally extruded, and then the welding hole 4 of the rib tube 5 is processed, the rib tube 5 is welded to the welding hole 4, and the drive mounting plate 2 is fixed on the cross support rib 3 with screws. The above-mentioned PCB substrate 1 , cross support rib 3 and rib tube 5 can be made of aluminum alloy or heat-conducting plastic.

This high-power LED high bay light radiator and LED high bay light based on the principle of chimney effect cooperate to dissipate heat in this way. The high-power LED has a power range of 50W to 200W. The heat from the heat is conducted to the ribbed tube 5 through the base plate 1. The ribbed tube 5 adopts a hollow tubular structure with an open bottom, which can not only increase the contact area between the ribbed tube 5 and the air, but also form an obvious chimney effect to take away the heat. Due to the heating of the LED chip, the entire radiator and its surrounding environment form a temperature gradient, which also forms the power of air convection. The surrounding air enters from the air inlet 6 and the gap between the rib tubes 5, forming a chimney effect and maintaining a stable temperature. The air flow state continuously takes away the heat. Different sizes can be designed according to different powers of LED lights to meet heat dissipation requirements.

Of course, the present invention is not limited to the above-mentioned embodiments. Those skilled in the art can also make equivalent modifications or replacements without violating the spirit of the present utility model. These equivalent modifications or replacements are included in the rights of this application within the bounds of the requirements.

Claims (8)

1. the high-power LED mine lamp radiator based on stack effect principle, it is characterized in that: comprise PCB substrate (1) and drive installation plate (2), some ribbed pipes (5) based on the heat radiation of stack effect principle are evenly provided with between described PCB substrate (1) and drive installation plate (2), described ribbed pipe (5) bottom is provided with air inlet (6), and described air inlet (6) is arranged all outwardly.

2. according to claim 1 based on the high-power LED mine lamp radiator of stack effect principle, it is characterized in that: each described ribbed pipe (5) is evenly provided with some fins (7) along ribbed pipe (5) outer wall.

3. according to claim 1 or 2 based on the high-power LED mine lamp radiator of stack effect principle, it is characterized in that: the area of described air inlet (6) is 1 ~ 5 times of ribbed pipe (5) diameter.

4. according to claim 1 or 2 based on the high-power LED mine lamp radiator of stack effect principle, it is characterized in that: described PCB substrate (1) is provided with some connecting holes (4), each described ribbed pipe (5) is all inserted in each connecting hole (4).

5. according to claim 4 based on the high-power LED mine lamp radiator of stack effect principle, it is characterized in that: top and the drive installation plate (2) of described ribbed pipe (5) are provided with the space being beneficial to air and flowing.

6. according to the high-power LED mine lamp radiator based on stack effect principle described in any one in claim 1,2 or 5, it is characterized in that: described PCB substrate (1) is also provided with the cross hang rib (3) for support drive installing plate (2), described ribbed pipe (5) is uniformly distributed in the space that PCB substrate (1) and cross hang rib (3) formed.

7. according to claim 6 based on the high-power LED mine lamp radiator of stack effect principle, it is characterized in that: described PCB substrate (1) is for circular, disc along described PCB substrate (1) is provided with three circle ribbed pipes (5) from inside to outside, ribbed pipe (5) quantity of inner ring is 4, ribbed pipe (5) quantity of centre circle is 8, and ribbed pipe (5) quantity of outer ring is 16.

8. according to claim 2 based on the high-power LED mine lamp radiator of stack effect principle, it is characterized in that: the material of described ribbed pipe (5) and fin (7) is aluminium alloy or heat-conducting plastic or copper.