CN201363576Y - Light emitting diode lamp - Google Patents

Abstract

The utility model discloses a light emitting diode lamp, comprising: a lamp housing, a light source device, a first airflow unit and a second airflow unit. The lamp housing comprises: a shell, a cover body and a lamp pole fixing seat. The light source device comprises a plurality of light emitting diodes and a heat dissipation module and is arranged in the lamp housing. The first airflow unit has an air inlet arranged on the rear side of the cover body and an air outlet arranged on the front side of the shell body, which can form a first airflow to take away the heat energy on the heat dissipation fins of the heat dissipation module. The second airflow unit is respectively arranged on both sides of the lamp housing, and has an air inlet arranged on the cover body and an air outlet arranged on the shell body, which can form a second airflow on both sides to take away the heat energy conducted from the heat dissipation fins of the heat dissipation module to the shell body.

Description

LED lamps

technical field

The utility model relates to a lighting device, in particular to a light emitting diode lamp.

Background technique

Since light emitting diodes have the advantages of power saving, environmental protection, high brightness, and long service life, they have been widely used in the field of lighting sources. Although light-emitting diodes have the above-mentioned advantages, a large amount of heat energy will be generated when light-emitting diodes emit light, especially for high-power light-emitting diodes, it is necessary to improve the heat dissipation performance to avoid excessive heat accumulation and reduce the light-emitting efficiency and service life of light-emitting diodes.

In the field of lighting sources, the problem of heat dissipation of lamps using light-emitting diodes as light sources and street lamps is relatively serious. Because the number of light-emitting diodes used in street lamps is usually large and arranged in an array, the arrangement density is relatively high, so that the heat energy generated by the light-emitting diodes is relatively concentrated, and it is not easy to dissipate heat in a short time. In order to speed up the heat dissipation of light-emitting diodes, there is currently a heat dissipation module composed of heat dissipation fins and copper tubes installed outside the lamp housing of the lamp. The heat dissipation of the lamp housing is accelerated by the existing heat dissipation module, but The heat dissipation module is easily contaminated with dust or affected by rain, which reduces its heat dissipation performance. However, if the heat dissipation module is arranged in the lamp housing, although dust and rain can be avoided, since the heat dissipation module is confined in the lamp housing, its heat dissipation performance is also limited.

Utility model content

The purpose of the utility model is to provide a light-emitting diode lamp with a heat dissipation module that can prevent falling dust and rain and has high heat dissipation efficiency.

The utility model light emitting diode lamp comprises: a lamp housing, a light source device, a first air flow unit and a second air flow unit. The lamp housing includes: a shell and a cover, both of which jointly define a chamber and have a holding side and a free side on two opposite sides, and two sides respectively connecting the two ends of the holding side and the free side The housing has two partitions adjacent to the sides and extending from the inner surface of the housing to the direction of the cover. The light source device is arranged in the chamber, and includes a heat dissipation substrate, a plurality of light emitting diodes and a heat dissipation module respectively arranged on two opposite sides of the heat dissipation substrate, and the heat dissipation module is composed of a plurality of heat dissipation fins and a plurality of heat pipes , the heat dissipation substrate is assembled with the two partitions. The first airflow unit includes a plurality of first air inlets arranged on the cover and adjacent to the holding side, and at least one first air outlet arranged on the housing and adjacent to the free side, so that the external air can flow through the The first air inlet flows into the chamber and passes above the heat dissipation module, and then flows out of the chamber through the first air outlet to form a first airflow to take away the heat energy conducted by the heat dissipation module. Each of the second airflow units is respectively arranged on each of the sides adjacent to the lamp housing, and each includes a plurality of second air inlet holes arranged in the cover body and a plurality of second air outlet holes arranged in the casing. The second air intake hole is adjacent to the second air outlet hole and corresponds to the partition plate on each side, and is located on the two opposite sides of the partition plate with the heat dissipation module, so that air can flow in from the second air intake hole the chamber, and flow out of the chamber through the second air outlet along each partition.

Preferably, the first air inlet and the first air outlet of the first airflow unit are long and narrow and arranged at intervals, and the first airflow unit also includes a plurality of auxiliary inlets arranged on the cover and adjacent to the free side. stomata. In addition, the holding side of the lamp housing is connected to a light pole, and the lamp housing is inclined upward from the holding side to the free side at an angle of about 15 degrees to the horizontal plane, which can speed up the flow of air from the The flow velocity from the first air inlet hole to the first air outlet hole.

The material suitable for the housing is preferably metal with good thermal conductivity, such as aluminum alloy. The inner side of the casing can be further coated with a radiation absorbing layer, such as a dark coating, to absorb the radiant heat of the heat dissipation module, and then transfer the heat energy to the atmosphere through the casing. In addition, each of the partitions is made of metal and is in contact with the heat dissipation substrate, so as to conduct part of the heat energy to the corresponding second air flow unit, and the heat energy is taken out of the chamber by the air flow generated by each of the second air flow units.

Preferably, the positions where the second air outlets are provided on both sides of the casing are respectively recessed toward the corresponding partitions to form two indented wall parts, so as to shorten the distance between the second air outlets and the corresponding ones. The distance between the baffles is such that air flows in from the second air inlet and passes through the baffle to reach the second air outlet in a relatively short time and then flow out of the chamber. In addition, the second air inlets and the second air outlets of each of the second airflow units are elongated and preferably arranged at intervals.

The beneficial effect of the utility model is that: by means of the first air flow unit and the two second air flow units to generate flowing air, the heat energy generated by the LED in the chamber can be taken out of the chamber, and at the same time, the The shell dissipates heat, which can greatly increase the heat dissipation speed. In addition, the first and second air outlets of the first airflow unit and the two second airflow units are respectively arranged on the free side and both sides of the housing, so the housing is still covered above the cooling module to cover Dust and rain, avoid damage by dust and rain.

Description of drawings

FIG. 1 is an exploded perspective view illustrating a preferred embodiment of the LED lamp of the present invention.

Fig. 2 is a combined view of Fig. 1 and is another perspective view.

FIG. 3 is a side cross-sectional view of FIG. 2 .

FIG. 4 is a front sectional view of FIG. 2 .

Detailed ways

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

Referring to FIGS. 1-4 , the first preferred embodiment of the LED lamp of the present invention includes: a lamp housing 1 , a light source device 2 , a first airflow unit 3 and a second airflow unit 4 . The lamp housing 1 is used to prevent falling dust, rainwater and heat dissipation. In this embodiment, the lamp housing 1 has a holding side 11 and a free side 12 located on two opposite sides, and is connected to the holding side 11 and the free side respectively. On the two sides 13 at both ends of 12 , the lamp housing 1 further includes: a housing 5 , a cover 6 and a light pole fixing seat 70 , the housing 5 and the cover 6 jointly define a chamber 14 . The housing 5 is made of aluminum alloy and has a top wall 51, a front wall 52 bent from the front side of the top wall 51 and extending obliquely downward, a rear wall 53 connected to the back side of the top wall 51, and two connected to the The top wall 51 , the side walls 54 on both sides of the front wall 52 and the rear wall 53 , and two partitions 55 respectively adjacent to the sides 13 and extending from the inner side of the top wall 51 toward the cover body 6 . Each sidewall 54 is partially concaved to form two indented wall portions 541 . A radiation absorbing layer 56 is coated on the inner wall of the casing 5 . The shape of the cover body 6 matches with the casing 5 , and is detachably assembled with the casing 5 , and is provided with two light-permeable regions 61 . Although the cover body 6 of this embodiment is provided with two light-transmitting regions 61, only one light-transmitting region can also be provided. In this embodiment, the joint between the front wall 52 of the housing 5 and the cover body 6 is the free side 12 of the lamp housing 1, and the joint joint between the rear wall 53 of the housing 5 and the cover body 6 is the fixing part of the lamp housing 1. The side 11 , the junction of the two side walls 54 of the housing 5 and the cover body 6 are the two sides 13 of the lamp housing 1 . In addition, although the housing 5 in this embodiment is made of aluminum alloy, it can also be made of other metal materials with better thermal conductivity, and the radiation absorbing layer 56 is made of black coating in this embodiment, but other dark coatings can also be used. Color coating is not limited to this embodiment. The light pole fixing seat 70 is arranged on the holding side 11 of the adjacent lamp housing 1, and is used to fix the lamp housing 1 and a light pole 7 (its entire structure is not shown), and the light pole 7 can be a street light pole arranged outdoors. , by connecting with the light pole 7, the light-emitting diode lamp of the present utility model can be used as a street lamp.

The light source device 2 is disposed in the chamber 14 and includes a heat dissipation substrate 22 , a plurality of LEDs 21 and a heat dissipation module 23 respectively disposed on two opposite sides of the heat dissipation substrate 22 . The heat dissipation substrate 22 is locked on the partition 55 inside the housing 5 , and the heat dissipation module 23 is fixed on the heat dissipation substrate 22 and spaced from the top wall 51 of the housing 5 by a certain distance. The light emitting diodes 21 are distributed in the translucent area 61 of the cover body 6 , so that the emitted light can exit the lamp housing 1 through the translucent area 61 . In this embodiment, the heat dissipation module 23 is composed of a plurality of heat dissipation fins 231 and a plurality of heat pipes (copper pipes) 232. The structure and function of the heat dissipation module 23 are well known to those skilled in the art, and will not be repeated here. .

The first airflow unit 3 includes a plurality of first air inlets 31 that are long and narrow and arranged at intervals on the cover body 6 and adjacent to the holding side 11, and a plurality of first air inlets 31 that are long and narrow and arranged at intervals on the housing 5 and that are adjacent to the holding side 11. Adjacent to the first air outlet hole 32 on the free side 12 . The thermal energy generated when the light-emitting diodes emit light, after being conducted by the heat dissipation module 23, will heat the air above the heat dissipation module 23 to form hot gas, and the hot gas will rise and diffuse along the top wall 51 to the first air outlet hole 32 to flow out of the chamber 14. The first air inlet 31 is adjacent to the translucent area 61. When the hot air above the cooling module 23 flows out of the chamber 14, the air in the atmosphere, which has a lower temperature than the hot air in the chamber 14, can pass through the first air inlet. The hole 31 flows into the chamber 14 to supplement the space above the cooling module 23 where the hot air flows out. In this way, cooler air can flow into the chamber 14 through the first air inlet 31, pass through the top of the cooling module 23, be heated to form hot air, flow along the top wall 51 of the casing 5, and then pass through the first air intake hole 31 to form hot air. An air outlet 32 flows out of the chamber 14 to form an air circulation (as shown by the arrow group in FIG. 3 ) to take heat out of the chamber 14 to accelerate heat dissipation. Moreover, the first airflow unit 3 also includes a plurality of auxiliary air inlet holes 33 arranged at intervals on the cover body 6 and adjacent to the free side 12. The auxiliary air inlet holes 33 correspond to the first air outlet holes 32 and can form a vertical The rising air flow (shown by the group of arrows in FIG. 3 ) increases the velocity of the hot air flowing out of the first air outlet hole 32 . In addition, when the light-emitting diode lamp of the present invention is assembled with the light pole 7, the lamp housing 1 is inclined upward from the holding side 11 to the free side 12 and has an angle of about 15 degrees with the horizontal plane. In other words, the lamp housing 1 It is set at an elevation angle of about 15 degrees. Thereby, the flow rate of the airflow formed by the first airflow unit 3 from the first air intake hole 31 to the first air outlet hole 32 can be made faster, so that the hot air can flow out of the chamber 14 more quickly.

Each second airflow unit 4 is arranged on each side 13 adjacent to the lamp housing 1, and each includes a plurality of elongated second air inlets 41 arranged in the cover 6 at intervals and a plurality of elongated and spaced second air inlets 41. The second air outlet holes 42 are arranged in a row on the retracted wall portion 541 of the casing 5 . The second air inlet 41 and the second air outlet 42 are adjacent to the partition 55 , and are respectively located on two opposite sides of the partition 55 with the heat dissipation module 23 . The partition 55 is locked to the heat dissipation substrate 22, and can conduct the heat energy of the heat dissipation substrate 22. The heat energy transferred to the partition 55 can heat the air outside the partition 55, that is, between the second air inlet 41 and the second air outlet. 42, when the air at this place is heated, the hot air will rise up and flow out of the chamber 14 through the second air outlet 42, and the air with a lower temperature in the atmosphere can flow into the chamber through the second air inlet 41. The chamber 14 complements the space after the hot air flows out, so that another airflow cycle can be formed (as shown by the group of arrows in Figure 4 ), so that the hot air continuously flows out of the chamber 14 along the partition plate 55 through the second air outlet hole 42 to achieve heat dissipation. Effect. Moreover, the retracted wall portion 541 of the housing 5 is closer to the partition plate 55, which can shorten the distance between the second air outlet hole 42 and the partition plate 55 located at the retracted wall portion 541, so that the hot gas near the partition plate 55 can be shortened. When the time arrives, the second air outlet 42 flows out of the chamber 14 to accelerate the heat dissipation.

The first airflow unit 3 and the second airflow unit 4 can generate airflow around the heat dissipation module 23, so that the heat energy generated when the light emitting diode 21 emits light is conducted through the heat dissipation substrate 22 and the heat dissipation module 23, and then further passes through The gas flows out of the chamber 14, which can greatly improve the heat dissipation efficiency. In addition, part of the heat energy can also be absorbed by the heat radiation absorbing layer 56 inside the housing 5 , and then conducted to the atmosphere through the metal housing 5 .

Since the first air outlet 32 and the second air outlet 42 are distributed around the top wall 51 of the casing 5, the heat dissipation module 23 can be shielded by the top wall 51 in the chamber 14 to prevent rainwater from directly Scouring or covering with dust can ensure the heat dissipation performance of the heat dissipation module 23 .

To sum up, the light-emitting diode lamp of the present invention can prevent falling dust and rain, and is suitable for being installed outdoors. Moreover, the first airflow unit 3 and the second airflow unit 4 can greatly improve the heat dissipation efficiency, so that the light-emitting diode can have Better luminous efficiency and service life.

Claims (11)

1. A light-emitting diode lamp, comprising: a lamp housing and a light source device, the lamp housing comprising: a housing and a cover, both of which jointly define a chamber and have a holding side and a a free side, and two sides respectively connecting the holding side and two ends of the free side; The device is installed in the chamber, including a heat dissipation substrate with a plurality of light-emitting diodes, and a heat dissipation module on the backlight side of the heat dissipation substrate. The heat dissipation module is composed of a plurality of heat dissipation fins and a plurality of heat pipes , the heat dissipation substrate is assembled with the two partitions; it is characterized in that: the light-emitting diode lamp also includes a first airflow unit and a second airflow unit, and the first airflow unit includes a plurality of The first air intake hole on the holding side, and a plurality of first air outlet holes located on the housing and adjacent to the free side, so that air can flow into the chamber from the first air intake holes and pass above the heat dissipation module , and then flow out of the chamber from the first air outlet hole; each of the second air flow units is respectively arranged on each of the sides adjacent to the lamp housing, and each includes a plurality of second air inlet holes arranged in the cover body and a plurality of A second air outlet hole is arranged on the casing, the second air inlet hole is adjacent to the second air outlet hole and corresponds to the partition plate on each side, and is located on two sides of the partition board with the cooling module. On the opposite side, air can flow into the chamber through the second air inlet, and flow out of the chamber through the second air outlet along each partition. 2. The light-emitting diode lamp as claimed in claim 1, characterized in that: the places where the second air outlets are provided on both sides of the casing are respectively recessed toward the corresponding partitions to form two retracted wall parts, To shorten the distance between the second air outlet and the corresponding partitions. 3 . The light emitting diode lamp as claimed in claim 2 , wherein the second air inlet and the second air outlet of each of the second air flow units are long and narrow and arranged at intervals. 4 . 4 . The light emitting diode lamp as claimed in claim 1 , wherein the first air inlet and the first air outlet of the first airflow unit are long and narrow and arranged at intervals. 5. The light-emitting diode lamp according to any one of claims 1-4, wherein the first airflow unit further comprises a plurality of auxiliary air inlets disposed on the cover and adjacent to the free side. 6. The light-emitting diode lamp according to any one of claims 1-4, wherein the housing is made of metal. 7. The light-emitting diode lamp according to any one of claims 1-4, characterized in that: the inner side of the housing is coated with a radiation absorbing layer. 8. The light-emitting diode lamp as claimed in claim 5, wherein the housing is made of metal. 9. The light-emitting diode lamp as claimed in claim 8, characterized in that: the inner side of the housing is coated with a radiation absorbing layer. 10. The light-emitting diode lamp as claimed in claim 1, wherein the holding side of the lamp housing is connected to a light pole, and the lamp housing is inclined upward from the holding side to the free side and is parallel to the horizontal plane A tilted state with an included angle of about 15 degrees. 11. A light-emitting diode lamp, comprising: a lamp housing and a light source device, the lamp housing comprising: a shell and a cover, both of which jointly define a chamber and have a holding side and a a free side, and two sides respectively connecting the holding side and two ends of the free side; The device is installed in the chamber, including a heat dissipation substrate with a plurality of light-emitting diodes, and a heat dissipation module arranged on the backlight side of the heat dissipation substrate. The heat dissipation module is composed of a plurality of heat dissipation fins and a plurality of heat pipes , the heat dissipation substrate is assembled with the two partitions; it is characterized in that: the inner side of the housing is coated with a radiation absorbing layer, and the light-emitting diode lamp also includes a first airflow unit and a second airflow unit, the first airflow The unit includes a plurality of first air inlets arranged on the cover and adjacent to the holding side, and a plurality of first air outlets arranged on the housing and adjacent to the free side, so that air can pass through the first air inlet The hole flows into the chamber and passes above the heat dissipation module, and then flows out of the chamber through the first air outlet hole; each of the second airflow units is respectively arranged on each side of the lamp housing adjacent to each of them, and each includes a plurality of devices. In the second air intake hole of the cover and a plurality of second air outlet holes provided in the casing, the second air intake hole is adjacent to the second air outlet hole and corresponds to the partition plate on each side, and The cooling modules are respectively located on two opposite sides of the partition, so that air can flow into the chamber through the second air inlet, and flow out of the chamber along each partition through the second air outlet.

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