CN205226986U - Good high -power LED lamp dispels heat - Google Patents

Abstract

The utility model provides a high-power LED lamp with good heat dissipation, which includes a lamp housing, a lampshade, a radiator and an LED light source; the LED light source is placed in the lampshade; the radiator is arranged between the lampshade and the lamp housing; The heat sinks are separated to form several vertical heat dissipation channels; the bottom of the lampshade is provided with lampshade ventilation holes; the surface of the lamp housing is provided with lamp housing ventilation holes; the lampshade ventilation holes, the inside of the lampshade, the heat dissipation channel and the lamp housing ventilation holes are connected in sequence to form The first ventilation channel for air circulation; the heat dissipation channel is also provided with an air inlet on the side wall near one end of the lampshade; the air inlet, the heat dissipation channel and the air hole of the lamp housing are connected in sequence to form a second air flow channel for air circulation. The radiator of the utility model has the advantages of large heat dissipation area, and the two heat dissipation channels generate air flow at the same time to greatly improve the heat dissipation effect. For high-power LED lamps, it has a very excellent heat dissipation effect and can meet the needs of high-power LEDs with ultra-high brightness. Heat dissipation requirements of lamps.

Description

A high-power LED lamp with good heat dissipation

technical field

The utility model relates to an LED lighting fixture, in particular to a high-power LED lamp with good heat dissipation function.

Background technique

As an emerging green light source, LED has many advantages such as energy saving and environmental protection, and is increasingly applied to various lighting fields. LED is a solid-state light source that converts electrical energy directly into visible light output. With the continuous development of LED technology, the power of the current LED light source is already very high, which can emit high-brightness light. This high-power LED light has been applied to the lighting equipment of various large venues.

Although high-power LED lamps can emit high-brightness light, limited by technology, the efficiency of converting electrical energy into light energy has not yet reached 100%. At present, the conversion efficiency of high-power LED lamps produced by some manufacturers with more advanced technology It can reach about 80%, and about 20% of the electric energy is still converted into heat energy. If the heat energy cannot be conducted and dissipated from the LED light source in a timely and effective manner, it will greatly affect the service life of the LED lamp. Therefore, the existing high-power LED lamps will be equipped with various heat dissipation devices to conduct and dissipate the heat in the LED lamps.

At present, the heat dissipation equipment used in high-power LED lamps is generally a passive heat dissipation structure composed of many heat sinks. The LED light source is installed on the aluminum substrate to make an LED light board, and the LED light board is then installed on the surface of the radiator to dissipate heat. The process is that the heat is conducted from the LED lamp board to the substrate of the heat sink, and then to each heat sink, and finally the heat sink dissipates the heat through thermal radiation. This heat dissipation structure can meet the requirements for the heat dissipation effect of LED lamps with low power, but for high-power LED lamps that require ultra-high brightness, the heat dissipation efficiency is seriously insufficient. Due to the low heat dissipation efficiency, a large number of The heat accumulated on the radiator makes it difficult for the heat on the LED lamp board to be dissipated to the radiator, which seriously affects the service life of the lamp.

For this reason, it is necessary to design a high-power LED lamp with higher heat dissipation efficiency and faster air convection.

Contents of the invention

The purpose of this utility model is to overcome the defects of the high power LED lamps in the prior art which lead to the increase of energy consumption due to the low heat dissipation efficiency, aiming to provide a high power LED lamp which has a very excellent heat dissipation effect and can meet the requirements of ultra-high brightness. The heat dissipation requirements of high-power LED lamps.

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

A high-power LED lamp with good heat dissipation, including a lamp housing, a lamp shade, a radiator and an LED light source; the LED light source is placed in the lamp shade; the radiator is arranged between the lamp shade and the lamp housing; in particular: the The inside of the radiator is separated by heat sinks to form a number of vertical cooling channels; the bottom of the lampshade is provided with lampshade air holes; the surface of the lamp housing is provided with lamp housing air holes; the lampshade air holes, lampshade The inside, the heat dissipation passage and the air hole of the lamp housing are connected in sequence to form the first air passage for air circulation; the heat dissipation passage is also provided with an air inlet on the side wall near one end of the lampshade; the air inlet, heat dissipation passage and lamp The ventilation holes of the shell are communicated in sequence to form a second ventilation channel for air circulation.

The principle that the LED lamp of the present invention has a good heat dissipation effect is: when the LED light source is working, heat will be generated and accumulated in the lampshade, and the outside air will enter the lampshade through the vent hole of the lampshade, and take away the heat through the heat dissipation channel to ventilate from the lamp housing The holes flow out to form the gas circulation in the first air channel to dissipate heat. Since multiple cooling channels are formed in the radiator, the cooling area in the radiator is multiplied, and the hot air can be rapidly dispersed. Secondly, when the hot air disperses and flows in the radiator, part of the hot air will be discharged from the air outlet of the heat dissipation channel, causing uneven heat distribution in the radiator and promoting the rapid convection of air inside and outside the radiator. The air outside the radiator actively enters from the air inlet of the heat dissipation channel, and is discharged through the air hole of the lamp housing through the heat dissipation channel, forming the air circulation of the second air channel to dissipate heat. In this way, the air circulation of the first air channel and the second air channel can not only dissipate heat through heat radiation, but also better dissipate heat through active air convection, so that the heat dissipation effect is increased several times. The heat on the device can be dissipated quickly without heat accumulation, and the heat on the LED light source can be dissipated better and more efficiently.

A heat conduction plate is also provided between the lampshade and the radiator, the LED light source is installed on the heat conduction plate, and the heat conduction plate is also provided with air holes on the heat conduction plate.

The preferred structure of the radiator is as follows: the radiator is formed by nesting the outer casing and the inner casing, and vertically connecting a plurality of fins between the outer casing and the inner casing. The outer casing and the inner casing are arranged concentrically. The plurality of cooling fins are evenly arranged in the annular space between the outer casing and the inner casing.

Preferably, the length of the outer sleeve is shorter than the length of the cooling fins; the cooling fins protrude out of the outer sleeve near the end of the lampshade in a vertical direction, thereby forming the air inlet.

The high-power LED lamp of the utility model has a very excellent heat dissipation effect, and can meet the heat dissipation requirements of the high-power LED lamp with ultra-high brightness.

Description of drawings

Fig. 1 is the structural exploded view of the LED lamp of embodiment;

Fig. 2 is the side view of the LED lamp of embodiment;

Fig. 3 is the top view of the radiator of embodiment;

Reference signs: 1-lamp housing; 11-venting hole of lamp housing; 2-lampshade; 21-venting hole of lampshade; 3-radiator; 31-outer sleeve; 32-inner sleeve; 33-radiating fin; 34-radiation Channel; 341 - the first heat dissipation channel; 342 - the second heat dissipation channel; 35 - air inlet; 4 - LED light source; 5 - heat conduction plate;

"→" in Figure 2 indicates the direction of airflow during heat dissipation.

detailed description

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

As shown in FIGS. 1 and 2 , a high-power LED lamp with good heat dissipation includes a lamp housing 1 , a lampshade 2 , a radiator 3 , an LED light source 4 and a heat conducting plate 5 . One end of the radiator 3 is installed on the bottom surface of the lamp housing 1 , the other end of the radiator 3 is connected to the lampshade 2 , and a heat conducting plate 5 is also provided between the radiator 3 and the lampshade 2 . An LED light source 4 is arranged inside the lampshade 2 , and the LED light source 4 is installed on a heat conducting plate 5 .

As shown in FIG. 2 , the radiator 3 is formed by concentrically nesting an outer sleeve 31 and an inner sleeve 32 , and several cooling fins 33 are connected between the outer sleeve 31 and the inner sleeve 32 . The cooling fins 33 are uniformly arranged in the annular space formed between the outer casing 31 and the inner casing 32 , and divide the radiator 3 into several vertical first cooling channels 341 . The inner wall of the inner sleeve 32 also forms a second vertical heat dissipation channel 342 , and the position of the air hole 21 of the lampshade corresponds to the position of the inner sleeve 32 . The first heat dissipation passage 341 formed by the inner wall of the outer sleeve 31 , the outer wall of the inner sleeve 32 and the fins 33 , and the second heat dissipation passage 342 formed by the inner wall of the inner sleeve 32 together constitute the heat dissipation passage 34 of the radiator 3 .

As shown in FIG. 1 and FIG. 2 , several lamp housing air holes 11 are provided on the top of the lamp housing 1 . The bottom of the lampshade 2 is also provided with a lampshade ventilation hole 21 . The heat conduction plate 5 is also provided with a heat conduction plate ventilation hole 51 . The air hole 21 of the lampshade, the inside of the lampshade 2 , the air hole 51 of the heat conducting plate, the heat dissipation channel 34 and the air hole 11 of the lamp housing are sequentially connected to form a first air passage.

The length of the cooling fin 33 is greater than the length of the outer sleeve 31, and the end of the cooling fin 33 protrudes from the outside of the lamp cover 2 near the lamp cover 2, so that an air inlet 35 communicating with the outside is formed on the side wall of the first cooling channel 341. The air inlet 35 , the first heat dissipation channel 341 and the air hole 11 of the lamp housing communicate in sequence to form a second air channel.

When the LED lamp is working, the LED light source 4 will generate a large amount of heat, which is easy to accumulate in the lampshade 2, and there is a temperature difference between the inside and outside of the lampshade 2, thereby generating air flow to dissipate heat. The vent hole 51 of the heat conducting plate and the heat dissipation channel 34 flow out from the vent hole 11 of the lamp housing, and the air forming the first air passage flows and dissipates heat. Since there are multiple cooling channels 34 formed in the radiator 3, uneven air flow and hot and cold differences are likely to occur between the cooling channels 34, causing the air flow to diffuse and convect in the cooling channels 34, thereby increasing the heat dissipation area. At the same time, the internal and external temperatures of the heat dissipation passage 341 are also different, which causes outside air to actively enter the heat dissipation passage 341 through the air inlet 35 and flow out from the air hole 11 of the lamp housing, that is, the air flow in the second air passage is formed to dissipate heat. The first air passage and the second air passage generate air flow at the same time, which promotes the air convection of the radiator 3 and accelerates the heat dissipation speed of the radiator 3 .

Claims (6)

1. A high-power LED lamp with good heat dissipation, comprising a lamp housing, a lampshade, a radiator and an LED light source; the LED light source is placed in the lampshade; the radiator is arranged between the lampshade and the lamp housing; its characteristics In that: the heat sink is separated by heat sinks to form several vertical heat dissipation channels; the bottom of the lampshade is provided with lampshade air holes; the surface of the lamp housing is provided with lamp housing air holes; the lampshade air holes, The interior of the lampshade, the heat dissipation channel and the air hole of the lamp housing are connected in sequence to form the first air passage for air circulation; the heat dissipation channel is also provided with an air inlet on the side wall near one end of the lampshade; the air inlet, heat dissipation channel It communicates with the air holes of the lamp housing in sequence to form a second air passage for air circulation. 2. A high-power LED lamp with good heat dissipation according to claim 1, characterized in that: a heat conducting plate is provided between the lampshade and the radiator, and the LED light source is installed on the heat conducting plate, The heat conduction plate is also provided with ventilation holes on the heat conduction plate. 3. A high-power LED lamp with good heat dissipation according to claim 1, characterized in that: the radiator is made of an outer sleeve and an inner sleeve nested with each other, and is vertically connected to the outer sleeve by several cooling fins. Formed between the tube and the inner casing. 4. A high-power LED lamp with good heat dissipation according to claim 3, characterized in that: the outer sleeve and the inner sleeve are arranged concentrically. 5. A high-power LED lamp with good heat dissipation according to claim 3, characterized in that: the plurality of cooling fins are evenly arranged in the annular space between the outer casing and the inner casing. 6. A high-power LED lamp with good heat dissipation according to claim 3, characterized in that: the length of the outer sleeve is shorter than the length of the heat sink; the heat sink approaches the outer sleeve in the vertical direction The outside of one end of the lampshade protrudes to form the air inlet.