CN205560355U - Radiation type LED (light emitting diode) lamp - Google Patents

Abstract

The utility model discloses a heat-dissipating LED lamp, which aims to provide a heat-dissipating LED lamp with superior heat dissipation performance, which can effectively solve the problem of affecting the service life of the LED lamp due to the heat dissipation problem. It includes a heat conduction tube extending up and down and an LED light source arranged on the outer surface of the heat conduction tube. The inner cavity of the heat conduction tube forms a heat conduction convection channel, and the upper and lower ends of the heat conduction tube are opened, and the heat conduction convection channel passes through The openings at the upper and lower ends of the heat pipe communicate with the outside air.

Description

Cooling type led lamp

technical field

The utility model relates to an LED lamp, in particular to a heat dissipation LED lamp.

Background technique

As the fourth-generation lighting source, LED lights are widely used due to their small size, low power consumption, long service life, high brightness, low heat, environmental protection, and durability; but in the current application of LED lights, there are still many advantages. There are many technical difficulties, among which heat dissipation is an important factor limiting the development of LED lamps. In addition to converting a part of the electric energy into visible light, the other energy of the LED lamp is basically converted into heat energy, and the package area of the LED lamp is small, and the heat dissipation through convection and radiation is less. If the excess heat is not dissipated through the heat dissipation system, A large amount of heat will be accumulated in the LED lamp, which will affect the life of the LED lamp and cause problems such as malfunction of the electronic circuit.

Most of the current heat dissipation of LED lights adopts radiators, such as heat sinks, etc., but the heat dissipation efficiency of the current heat dissipation method of LED lights is low; especially for LED lights with high power and high density LED light sources. , it is more difficult to apply the current heat dissipation method of LED lamps.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art and provide a heat-dissipating LED lamp with superior heat dissipation performance, which can effectively solve the problem of affecting the service life of the LED lamp due to the heat dissipation problem.

The technical scheme of the utility model is:

A heat dissipation LED lamp includes a heat pipe extending up and down and an LED light source arranged on the outer surface of the heat pipe. The inner cavity of the heat pipe forms a heat conduction convection channel, and the upper and lower ends of the heat pipe are opened. The heat conduction and convection channel communicates with the outside air through the openings at the upper and lower ends of the heat conduction tube.

During the use of the LED lamp of this solution, the heat emitted by the LED light source is conducted to the heat conduction convection channel through the heat conduction tube, and a rising hot air flow is formed in the heat conduction convection channel, and flows out from the upper opening of the heat conduction tube, so that the cold air outside Enter the heat conduction convection channel, thereby forming hot and cold air convection in the heat conduction convection channel, quickly realize the heat dissipation of the heat pipe, realize the superior heat dissipation performance of the LED lamp, and effectively solve the problem of affecting the service life of the LED lamp due to the heat dissipation problem .

Preferably, it also includes a lampshade sheathed on the outside of the heat pipe, the LED light source is located in the lampshade, the lampshade is in the shape of a cylinder, and a number of elongated side cooling openings extending up and down are provided on the outer surface of the lampshade. The elongated side cooling vents of this solution can further effectively improve the cooling performance of the LED lamp.

Preferably, the lower end of the lampshade is closed, and the lower end surface of the lampshade is provided with a plurality of lower air guide holes communicating the inner cavity of the lampshade with the outside air.

Preferably, it also includes a lamp cap assembly, the lamp cap assembly includes a lamp cap shell, and a partition is arranged inside the lamp cap shell, and the partition plate separates the inner cavity of the lamp cap shell into an upper lamp cap inner cavity and a lower lamp cap inner cavity, and the heat conduction The upper end of the tube is fixed on the lamp cap shell, and the lamp cap shell is provided with a diversion opening connecting the inner cavity of the lower lamp cap and the heat conduction convection channel, and the diversion port is located in the upper opening of the heat conduction tube, and the lamp cap shell is also provided with several communicating ports. The lower heat dissipation port for the inner cavity of the lower lamp cap and the outside air. The structure of this scheme can reduce the manufacturing difficulty of the lamp head assembly while ensuring the superior heat dissipation performance of the LED lamp, and facilitate the actual processing and manufacture of the LED lamp.

Preferably, the lamp cap assembly further includes an LED lamp controller, the LED lamp controller is arranged in the inner cavity of the upper lamp cap, and the outer shell of the lamp cap is also provided with a plurality of upper heat dissipation ports communicating the inner cavity of the upper lamp cap with the outside air.

In this solution, setting the LED lamp controller in the inner cavity of the upper lamp holder can effectively reduce the influence of the heat emitted by the LED light source on the LED lamp controller.

Preferably, the lamp cap housing includes a connecting sleeve with upper and lower ends open, an upper cover located above the connecting sleeve and covering the upper opening of the connecting sleeve, and a lower end cover located below the connecting sleeve and covering the lower opening of the connecting sleeve. The plate is arranged in the connecting sleeve, the guide port is arranged in the middle of the lower end cover, the lower cooling port is arranged on the outer surface of the connecting sleeve, and the lower cooling port is located under the partition plate, and the upper end of the heat pipe is fixed on the lower end cover Above, the upper end of the lampshade is open, the upper end of the lampshade is fixed on the lower end cover, and the lower end cover seals the upper end opening of the lampshade. The structure of this scheme can reduce the manufacturing difficulty of the lamp head assembly while ensuring the superior heat dissipation performance of the LED lamp, and facilitate the actual processing and manufacture of the LED lamp.

Preferably, the lower end cover is provided with a plurality of end cover heat dissipation openings facing downward. The structure of this solution can further improve the heat dissipation performance of the LED lamp.

As a preference, a number of LED installation grooves extending up and down are provided on the outer surface of the heat pipe, and heat dissipation grooves extending up and down are also provided on the outer surface of the heat pipe between two adjacent LED installation grooves; the LED installation grooves are evenly distributed There are several such LED light sources. The scheme structure is not only convenient for the actual processing and manufacture of the LED lamp, but also beneficial for the heat dissipation of the LED lamp.

Preferably, the outer surface of the lampshade is provided with a layer of transparent nano silicon dioxide coating. The thermal conductivity of the transparent nano-silica coating is 12W/(m-k), which provides a good guarantee for the thermal conductivity of the lampshade coating.

The beneficial effect of the utility model is: it has superior heat dissipation performance, and can effectively solve the problem of affecting the service life of the LED lamp due to the heat dissipation problem.

Description of drawings

FIG. 1 is an exploded view of a heat dissipation LED lamp in Embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of a heat dissipation LED lamp in Embodiment 1 of the present utility model.

FIG. 3 is a schematic cross-sectional view of the heat pipe of Embodiment 1 of the present utility model.

Fig. 4 is a bottom view of the lampshade of Embodiment 1 of the present utility model.

In the figure: lampshade 1, strip-shaped side heat dissipation port 1a, lower air guide hole 1b, LED light source 2, heat pipe 3, heat conduction and convection channel 31, LED installation groove 32, heat dissipation groove 33, lamp cap assembly 4

Lower end cover 41, connecting sleeve 42, LED lamp controller 43, upper cover 44, end cover heat dissipation port 45, diversion port 46, lower lamp cap inner cavity 47, lower heat dissipation port 48, partition 49, upper lamp cap inner cavity 410 , the upper cooling outlet 411, the air duct 5.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:

Embodiment 1: As shown in Figure 1 and Figure 2, a heat-dissipating LED lamp includes a lamp cap assembly 4, a heat pipe 3 extending up and down, a lampshade 1 set outside the heat pipe, and an LED arranged on the outer surface of the heat pipe. light source 2. The LED light source is located inside the lampshade.

As shown in Fig. 2 and Fig. 3, the heat pipe is made of aluminum. A plurality of LED installation grooves 32 extending up and down are provided on the outer surface of the heat pipe, and a heat dissipation groove 33 extending up and down is provided on the outer surface of the heat pipe between two adjacent LED installation grooves. Several LED light sources are evenly distributed in the LED installation groove. The inner cavity of the heat pipe forms a heat conduction and convection channel 31 . The upper and lower ends of the heat conduction pipe are open, and the heat conduction and convection channel communicates with the outside air through the upper and lower ends of the heat conduction pipe.

As shown in Figure 2 and Figure 4, the material of the lampshade is optical grade PMMA. The lampshade is cylindrical in shape. The outer surface of the lampshade is provided with a layer of transparent nano silicon dioxide coating. The lower end of the lampshade is closed, and the lower end surface of the lampshade is provided with a plurality of lower air guide holes 1b connecting the inner cavity of the lampshade with the outside air. The lower air conduction hole is located directly below the opening at the lower end of the heat pipe. The outer surface of the lampshade is provided with several elongated side cooling vents 1a extending up and down, and the lampshade located between two adjacent strip-shaped cooling vents is a semicircular cover body protruding outward.

As shown in FIG. 1 and FIG. 2 , the lamp cap assembly includes a lamp cap shell and an LED lamp controller 43 . The lamp cap shell includes a connection sleeve 42 with upper and lower openings, an upper cover 44 located above the connection sleeve and covering the upper opening of the connection sleeve, and a lower end cover 41 located below the connection sleeve and covering the lower opening of the connection sleeve. A baffle 49 is arranged inside the lamp cap housing, and the baffle 49 of this embodiment is arranged in the connection sleeve. The partition divides the inner cavity of the lamp cap shell into an upper lamp cap inner cavity 410 and a lower lamp cap inner cavity 47 . The inner chamber of the upper lamp holder is located above the inner chamber of the lower lamp holder. The LED lamp controller is arranged in the inner cavity of the upper lamp holder. The shell of the lamp cap is also provided with a number of upper cooling ports 411 connecting the inner cavity of the upper lamp cap with the outside air. The upper cooling ports of this embodiment are arranged on the upper cover. The lower end cover is provided with a plurality of end cover cooling vents 45 with openings facing downward. The shell of the lamp cap is also provided with a number of lower cooling ports 48 connecting the inner cavity of the lower lamp cap with the outside air. The lower cooling ports of this embodiment are arranged on the outer surface of the connecting sleeve, and the lower cooling ports are located below the partition.

The upper end of the lampshade is open, the upper end of the lampshade is fixed on the lower end cover, and the lower end cover seals the upper end opening of the lampshade. The lampshade is connected with the lower end cover through a buckle or a plug-in card. The upper end of the heat conduction pipe is fixed on the shell of the lamp holder, and the upper end of the heat conduction pipe in this embodiment is fixed on the lower end cover. The shell of the lamp cap is provided with a diversion opening 46 connecting the inner cavity of the lower lamp cap with the heat conduction and convection channel, and the diversion port in this embodiment is arranged in the middle of the lower end cover. The diversion port is located in the upper opening of the heat pipe. The upper part of the heat pipe is provided with an air guide pipe 5 with upper and lower ends open, and the upper end opening of the air guide pipe is connected with the air guide port.

During the use of the LED lamp of this embodiment, part of the heat emitted by the LED light source is directly dissipated through the bar-shaped side cooling vents; the other part is conducted into the heat conduction convection channel through the heat conduction tube, and forms an ascending hot air flow in the heat conduction convection channel. The rising hot air flows out from the upper opening of the heat pipe into the inner cavity of the lower lamp cap, and flows out from the lower heat dissipation port, so that the cold air from the outside enters the heat conduction convection channel, forming hot and cold air convection in the heat conduction convection channel, and quickly Realize the heat dissipation of the heat pipe and realize the superior heat dissipation performance of the LED lamp.

Claims (9)

1. A heat-dissipating LED lamp, characterized in that it comprises a heat pipe extending up and down and an LED light source arranged on the outer surface of the heat pipe, the inner cavity of the heat pipe forms a heat conduction convection channel, and the upper and lower sides of the heat pipe Both ends are open, and the heat conduction and convection channel communicates with the outside air through the openings at the upper and lower ends of the heat conduction tube. 2. The heat dissipation LED lamp according to claim 1, further comprising a lampshade sleeved outside the heat pipe, the LED light source is located in the lampshade, the lampshade is cylindrical, and the outer surface of the lampshade is There are several elongated side cooling vents extending up and down. 3. The heat-dissipating LED lamp according to claim 2, wherein the lower end of the lampshade is closed, and the lower end surface of the lampshade is provided with a plurality of lower air guide holes connecting the inner cavity of the lampshade with the outside air. 4. The heat-dissipating LED lamp according to claim 2 or 3, characterized in that it also includes a lamp cap assembly, the lamp cap assembly includes a lamp cap shell, and a partition is arranged inside the lamp cap shell, and the partition divides the lamp cap shell The inner cavity is divided into the inner cavity of the upper lamp cap and the inner cavity of the lower lamp cap. The upper end of the heat pipe is fixed on the lamp cap shell, and the lamp cap shell is provided with a diversion port connecting the lower lamp cap inner cavity and the heat conduction and convection channel, and the flow guide The mouth is located in the upper opening of the heat pipe, and the lamp cap shell is also provided with a number of lower heat dissipation ports connecting the inner cavity of the lower lamp cap with the outside air. 5. The heat-dissipating LED lamp according to claim 4, wherein the lamp cap assembly further includes an LED lamp controller, the LED lamp controller is arranged in the inner cavity of the upper lamp cap, and the lamp cap shell is further provided with There are several upper heat dissipation openings connecting the inner cavity of the upper lamp holder with the outside air. 6. The heat-dissipating LED lamp according to claim 4, characterized in that, the lamp base shell comprises a connecting sleeve with upper and lower ends open, an upper cover located above the connecting sleeve and covering the upper opening of the connecting sleeve, and a connecting sleeve located at the connecting sleeve. The lower end cover under the sleeve and covering the lower opening of the connecting sleeve, the partition plate is arranged in the connecting sleeve, the diversion port is arranged in the middle of the lower end cover, the lower cooling outlet is arranged on the outer surface of the connecting sleeve, and the lower The heat dissipation port is located below the partition, the upper end of the heat pipe is fixed on the lower end cover, the upper end of the lampshade is open, the upper end of the lampshade is fixed on the lower end cover, and the lower end cover seals the upper end opening of the lampshade. 7. The heat-dissipating LED lamp according to claim 6, characterized in that, the lower end cover is provided with a plurality of end cover heat dissipation openings with openings facing downward. 8. The heat-dissipating LED lamp according to claim 1, 2 or 3, wherein the outer surface of the heat pipe is provided with several LED installation grooves extending up and down, and the heat conduction between two adjacent LED installation grooves A cooling groove extending up and down is also provided on the outer surface of the tube; several LED light sources are evenly distributed in the LED installation groove. 9. The heat dissipation LED lamp according to claim 2 or 3, characterized in that, the outer surface of the lampshade is provided with a layer of transparent nano-silica coating.