CN204730048U - Active cooling ceiling lamp - Google Patents

Abstract

The utility model relates to an initiative heat dissipation ceiling lamp, include: the LED lamp comprises a substrate packaged with a plurality of LED lamp beads, a radiator connected with the substrate, and a fan arranged in the radiator. The heat sink includes: the heat dissipation structure comprises a first connecting disc connected with a substrate, a second connecting disc coaxially arranged with the first connecting disc, a heat dissipation sheet connected between the first connecting disc and the second connecting disc, a pipeline connected with one surface of the second connecting disc, which is far away from the first connecting disc, a connecting plate connected with the pipeline and a heat dissipation fin connected between the connecting plate and the second connecting disc. The fan is located within the duct. The side wall of the pipeline is provided with a plurality of vent holes, the vent holes and the radiating fins are staggered, and the connecting plate is provided with an air inlet. Above-mentioned ceiling lamp initiatively dispels heat because be equipped with the fan in the pipeline of radiator, the fan can blow to first connecting disc direction. The air circulation speed among the radiating fins is increased, so that the radiating speed of the radiating fins is increased, and the radiating efficiency can be improved.

Description

Active cooling ceiling lamp

technical field

The utility model relates to a lighting fixture, in particular to an active heat dissipation ceiling lamp.

Background technique

LED (Light Emitting Diode), that is, semiconductor electric light source, light-emitting diode, also known as semiconductor lamp, is a kind of electric light source without filament, which directly converts electrical energy into light energy.

LED ceiling lamps have the characteristics of energy saving and long life, avoiding the trouble of changing bulbs frequently, and are favored by more and more users. However, the heat dissipation problem of LED ceiling lamps is also a key issue, which seriously affects the light efficiency and life of LED light sources. Traditional LED ceiling lamps have low heat dissipation efficiency, which leads to high temperature of the LED light source, which affects the light efficiency and life of the LED.

Utility model content

Based on this, it is necessary to aim at the heat dissipation problem of the active heat dissipation ceiling lamp, to provide a kind of heat dissipation fin with a plurality of fins arranged between the connection plate and the second connection pad, and connected to the side of the second connection pad away from the first connection pad. The duct, the fan arranged in the duct, and the side wall of the duct are provided with ventilation holes, and the ventilation holes and the heat dissipation fins are staggered from each other, which is an active heat dissipation ceiling lamp with higher heat dissipation efficiency.

An active heat dissipation ceiling lamp, comprising: a substrate packaged with a plurality of LED lamp beads, a radiator connected to the substrate, a fan arranged in the radiator, a lampshade connected to the radiator, and a control board electrically connected to the LED lamp beads .

The heat sink includes: a first connection pad connected to the substrate, a second connection pad coaxially arranged with the first connection pad, a heat sink connected between the first connection pad and the second connection pad, and the second connection pad The pipe connected to the side away from the first connection plate, the connection plate connected to the pipe, and the cooling fins connected between the connection plate and the second connection plate. The second connection pad is located on the side of the first connection pad away from the substrate, and the fan is located in the duct.

There is an opening in the center of the second connection plate, the radius of the opening is equal to the radius of the inner wall of the pipe, there are multiple cooling fins arranged at intervals, the cooling fins are also connected to the pipe, and the side wall of the pipe is provided with a plurality of ventilation holes, through which The air holes and the cooling fins are staggered mutually, and the connecting plate is provided with an air inlet.

In one of the embodiments, the first connecting pad is circular.

In one of the embodiments, the vent hole is located at the end of the pipe connected to the second connection plate.

In one embodiment, the connecting plate is circular, and the cooling fins are arranged in a circle with the axis of the connecting plate as the center line.

In one of the embodiments, the connecting plate is circular.

In one embodiment, the heat sink is provided with through holes.

In one of the embodiments, the ventilation hole is square.

In one of the embodiments, a support is provided inside one end of the pipe connected to the connection plate, and a fan is provided on the side of the support facing the first connection plate.

In one embodiment, the radius of the inner side of the air guide vane is two-thirds of the radius of the outer side of the air guide vane.

In the above-mentioned active heat dissipation ceiling lamp, the substrate generates heat due to the light emitted by the LED lamp beads. Since the substrate is connected to the first land, heat can be transferred to the heat sink. The cooling fins, cooling fins and second connection pads of the radiator can dissipate heat faster due to the larger cooling area. Since the fan is arranged in the pipe of the radiator, the fan can blow air toward the first connection plate. Because the wind blown by the fan can be blocked by the first connection plate, the wind can be diffused around the first connection plate, and then the direction of the wind blowing can be changed and blown toward the heat sink, so that the heat dissipation efficiency of the heat sink can be improved. The inner edge of the second connection plate is also connected with an air guide fin, which can guide a part of the wind to enter between the second connection plate and the connection plate through the vent hole, so as to speed up the air circulation speed between the heat dissipation fins, thereby improving the heat dissipation speed of the heat dissipation fins , can improve the cooling efficiency.

Description of drawings

Fig. 1 is a schematic structural view of a preferred embodiment of an active heat dissipation ceiling lamp;

Fig. 2 is a structural schematic diagram of another viewing angle of the active heat dissipation ceiling lamp shown in Fig. 1;

Fig. 3 is an exploded schematic diagram of the active heat dissipation ceiling lamp shown in Fig. 1;

Fig. 4 is a structural schematic diagram of the heat sink of the active heat dissipation ceiling lamp shown in Fig. 1;

The meanings of each label in the accompanying drawings are:

10- Active cooling ceiling lamp;

110-substrate, 111-LED lamp beads;

121-first connection plate, 1211-convex ring, 122-second connection plate, 1221 plane part, 1222-arc surface, 1223-opening, 1224-air guide fin, 123-radiating fin, 1231-heating section, 1232- Arc section, 1233-parallel section, 124-pipe, 1241-air vent, 1242-bracket, 125-connecting plate, 1251-air inlet, 126-radiating fin;

130 - lampshade;

140 - fan.

Detailed ways

As shown in Figure 1 and Figure 3, wherein, Figure 1 is a schematic structural view of a preferred embodiment of the active cooling ceiling lamp 10; Figure 2 is a schematic structural view of another viewing angle of the active cooling ceiling lamp 10 shown in Figure 1; 3 is an exploded schematic diagram of the active heat dissipation ceiling lamp 10 shown in FIG. 1 .

An active heat dissipation ceiling lamp 10, comprising: a substrate 110 packaged with a plurality of LED lamp beads 111, a radiator connected to the substrate 110, a lampshade 130 connected to the radiator, and a control board electrically connected to the LED lamp beads 111 (Fig. not shown).

Wherein, the radiator includes: a first connection pad 121 connected to the substrate 110, a second connection pad 122, a heat sink 123 arranged between the first connection pad 121 and the second connection pad 122, and a heat sink connected to the second connection pad 122. The pipe 124 , the connecting plate 125 connected to the pipe 124 and the heat dissipation fins 126 arranged between the connecting plate 125 and the second connecting plate 122 . The second connection pad 122 is located on a side of the first connection pad 121 away from the substrate 110 . For example, the substrate 110 is provided with a control circuit connected to the LED lamp bead 111 for controlling the LED lamp bead 111 . Preferably, the control circuit is implemented using existing technologies, which will not be described in detail here.

In order to improve the heat dissipation effect, for example, the substrate 110 is an aluminum substrate, and its shape can be various shapes such as circle, ellipse, square, etc. Preferably, the substrate is a circle. The shape of the first connection pad 121 corresponds to the shape of the substrate 110. In this embodiment, the first connection pad 121 is circular, for example, it is a circular disk shape. In other embodiments, the first connection pad 121 can be Other shapes such as square disc or oval disc. The edge of the first connection plate 121 is provided with a protruding ring 1211, the protruding ring 1211 is circular, and the inner side of the protruding ring 1211 is also provided with a first engaging portion, the substrate 110 is arranged in the protruding ring 1211 and engages with the first engaging portion . At the same time, the substrate 110 is also fixedly connected to the first connection pad 121 by screws. Thermally conductive silica gel is also coated between the substrate 110 and the first connection pad 121. Since the thermally conductive silica gel has high bonding performance and super-strong heat conduction effect, it can not only stabilize the connection between the substrate 110 and the first connection pad 121, but also improve the thermal conductivity. The efficiency of heat transfer. The lampshade 130 is in the shape of a hemispherical shell, and the outer side of the protruding ring 1211 of the first connection plate 121 is provided with a second engaging portion, and the lampshade 130 is engaged and connected with the second engaging portion. In this way, the technical effect achieved is that the structure between the first connection pad 121 and the substrate 110 and between the first connection pad 121 and the lampshade 130 can be compacted, and the thermal resistance between the substrate 110 and the first connection pad 121 can also be reduced. . At the same time, it is convenient to disassemble and assemble through the way of snap connection and screw connection.

In order to improve the heat dissipation efficiency of the heat dissipation fins 123 , the heat dissipation fins 123 are connected to the side of the first connection pad 121 away from the substrate 110 , and a plurality of heat dissipation fins 123 are arranged at intervals on the first connection plate 125 . When the first connecting plate 121 is circular, the plurality of fins 123 are arranged in a circle around the center line of the first connecting plate 121 . In this way, the technical effect achieved is: since the first connection plate 121 is in direct contact with the substrate 110, the first connection plate 121 can quickly absorb the heat of the substrate 110 and quickly transmit it to the heat sink 123 directly connected to it, The plurality of cooling fins 123 are arranged at intervals so that a wider cooling space can be provided between the plurality of cooling fins 123 and the cooling area of the cooling fins can be increased.

Also refer to FIG. 4 , which is a schematic structural diagram of the heat sink 123 of the active heat dissipation ceiling lamp 10 shown in FIG. 1 . The heat sink 123 includes: a heat receiving section 1231 , an arc section 1232 and a parallel section 1233 . The heat-receiving section 1231 is straight, and the length of the heat-receiving section 1231 is less than the radius of the first connection plate 121, so that when the cooling fins 123 are circumferentially arranged around the center of the first connection plate 121, the space near the axis can be vacated to accommodate control panel etc. The heat receiving section 1231 is connected to the first connection pad 121 and receives heat transferred by the first connection pad 121 . Two sides of the heating section 1231 are parallel to each other and connected to the first connection pad 121 and the second connection pad 122 respectively. Both the arc section 1232 and the parallel section 1233 are only connected to the second connection pad 122 . The arc section 1232 is located between the heated section 1231 and the parallel section 1233. The arc section 1232 has two arc sides, and one side thereof is connected to the second connection plate 122. For example, as shown in FIG. 4, the two arc sides Different settings. The parallel section 1233 is located at the outermost section of the heat sink 123 , that is, at the end of the heat sink 123 away from the first connection pad 121 . One side of the parallel section 1233 is connected to the second connection pad 122 and the side is arc-shaped. The width of the parallel section 1233 is larger than that of the heating section 1231 , and the area of the parallel section 1233 is larger than that of the heating section 1231 and the arc section 1232 , which is beneficial to the heat dissipation of the heat sink 123 . There is also a through hole in the middle of the heat sink 123, and the through hole can be in any shape, such as oval, circular, square, etc., preferably, the through hole is circular. The through hole can also pass through the heat sink 123 obliquely, so that the heat sink 123 can form more heat dissipation area, and the heat dissipation efficiency of the heat sink 123 can be improved.

In order to improve the heat dissipation speed, the center of the second connection plate 122 is provided with an opening 1223, and the opening 1223 can be circular. The shape section 1232 and the parallel section 1233 are connected. Both the arc section 1232 and the parallel section 1233 are only connected to the arc surface 1222 . The radius of the outer edge of the plane portion 1221 is equal to or greater than the radius of the first connecting plate 125 . The radius of the inner edge of the plane portion 1221 is smaller than the radius of the first connecting plate 125 . The second connection plate 122 is arranged coaxially with the first connection plate 121 . In this way, the technical effect achieved is: the opening 1223 provided in the center of the second connection plate 122 can facilitate the convection of the air, speed up the circulation of the air, and thus increase the heat dissipation speed. The arrangement of the planar portion 1221 is beneficial to the connection between the second connection pad 122 and other components, and the arrangement of the arc surface 1222 is beneficial to increase the heat dissipation area and improve the heat dissipation speed.

In order to improve the heat dissipation speed, the pipe 124 is connected to the flat portion 1221 of the second connection plate 122, and the radius of the inner wall of the pipe 124 is equal to the radius of the inner edge of the flat portion 1221, that is, the radius of the inner wall of the pipe 124 is equal to the radius of the opening 1223. A support 1242 is provided in the middle of the pipe 124 , and a fan 140 is provided on the side of the support 1242 facing the first connecting plate 121 , and the fan 140 can blow air toward the heat sink 123 . The heat dissipation fins 126 have multiple fins and are arranged at intervals around the center line of the second land 122 . The side wall of the pipeline 124 is provided with a plurality of ventilation holes 1241, and the ventilation holes 1241 can be in any shape, such as oval, circular, square, etc., preferably, the ventilation holes 1241 are square, and each ventilation hole 1241 is connected with multiple The spaces between the heat sink fins 126 correspond to each other. In this embodiment, the ventilation holes 1241 are arranged at the end of the pipeline 124 close to the second connection plate 122, and are arranged in a circle with the center of the second connection disk 122 as the axis. In other embodiments, the ventilation holes 1241 can be provided in the pipeline. 124 anywhere on the sidewall. That is to say, the wind blown out by the fan 140 can be blown out through the ventilation hole 1241 , and then the wind can continue to be blown out through the gaps between the plurality of cooling fins 126 . Like this, the achieved technical effect is: the cooling fin 126 can improve the heat dissipation speed because it has a larger heat dissipation area, and when the fan 140 in the pipeline 124 rotates, the air circulation in the pipeline 124 can be accelerated. The wind blown from the fan 140 can be blown out through the air hole 1241 to speed up the heat dissipation.

In order to improve the cooling effect, one end of the pipe 124 is connected to the second connecting plate 122 , and the other end of the pipe 124 is connected to the connecting plate 125 . The connection plate 125 is a flat straight plate and has a circular shape, and an air inlet 1251 is provided at the connection between the connection plate 125 and the pipe 124 . The air inlet 1251 can also be arranged at the end where the pipe 124 is connected to the connecting plate 125 . The connection plate 125 is provided with a protruding connection portion on the side facing away from the heat dissipation fins 126 , and the connection portion is provided with a threaded hole, and the connection plate 125 can be connected to the outside through the threaded hole. When the active heat dissipation ceiling lamp 10 is connected to the wall through the connecting plate 125 , the raised connecting portion allows air to enter the duct 124 through the air inlet 1251 and then blow out through the fan 140 . In this way, the heat dissipation effect can be improved through effective air convection.

In order to improve heat dissipation efficiency, one side of the heat dissipation fin 126 is connected to the second connection pad 122 , and the other side of the heat dissipation fin 126 is connected to the connection plate 125 . Correspondingly, the shape of the side where the heat dissipation fin 126 is connected to the second connection pad 122 is the same as that of the second connection pad 122, and the side where the heat dissipation fin 126 is connected to the connection plate 125 is a straight line with the same shape as the second connection pad 122. shape. The heat dissipation fins 126 are provided in multiple pieces and are arranged at intervals in a circle with the axis of the second connecting pad 122 as the centerline. The heat dissipation fins 126 are also connected to the pipe 124 , and the connection point and the air hole 1241 provided on the pipe 124 are mutually staggered. In this way, the technical effect achieved is: the shapes of the two sides of the heat dissipation fins 126 can be respectively adapted to the second connection pad 122 and the connection plate 125 to make the structure more compact. The heat dissipation fins 126 and the pipes 124 are staggered to connect with the air holes 1241 , which allows the wind blown from the air holes 1241 to blow to the surface of the heat dissipation fins 126 , thereby further improving heat dissipation efficiency.

In order to improve the heat dissipation efficiency, the inner edge of the planar portion 1221 of the second connection pad 122 is further connected with an air guide piece 1224 , and the air guide piece 1224 is in the shape of a ring. The air guiding vanes 1224 extend inward and are inclined toward the fan 140 , and the inner radius of the air guiding vanes 1224 is two-thirds of the outer radius of the air guiding vanes 1224 . Since the fan 140 blows air toward the first connection plate 121, the setting of the air guide fins 1224 can block a part of the wind and guide the wind into between the second connection plate 122 and the connection plate 125, so as to speed up the circulation speed of the air on the surface of the cooling fins 126 , to improve the heat dissipation efficiency of the heat dissipation fins 126 . And the radius of the inside of the air guide vane 1224 is two-thirds of the radius of the outside of the air guide vane 1224, which can make the air guide vane 1224 only block the remaining part of the wind from entering between the first connection plate 121 and the second connection plate 122, And make this part of the wind blow to the cooling fins 123, thereby speeding up the cooling efficiency of the cooling fins 123.

In the above-mentioned active heat dissipation ceiling lamp 10, the substrate 110 will generate heat due to the light emitted by the LED lamp beads. Since the substrate 110 is connected to the first connection pad 121 , heat can be transferred to the first connection pad 121 , the heat sink 123 and the second connection pad 122 . The first connection pad 121 , the heat sink 123 and the second connection pad 122 can dissipate heat faster due to the larger heat dissipation area. Since the heat sink 123 is arranged between the first connection pad 121 and the second connection pad 122, the width of the heated section 1231 connected between the first connection pad 121 and the second connection pad 122 is affected by the first connection pad 121 and the second connection pad. The distance between the disks 122 is limited, and the arrangement of the arc section 1232 and the parallel section 1233 can effectively extend the heat sink 123 outward and continuously increase the width of the heat sink 123, thereby increasing the area of the heat sink 123 and improving heat dissipation efficiency. The center of the second connecting pad 122 is provided with an opening 1223 , which facilitates the circulation of air between the first connecting pad 121 and the second connecting pad 122 , thereby speeding up the heat dissipation speed of the heat sink 123 and improving the heat dissipation efficiency.

For the above-mentioned active heat dissipation ceiling lamp 10, the heat sink is also connected with heat dissipation fins 126 and connecting plate 125. The heat dissipation fins 126 have a larger heat dissipation area, which is beneficial to the dissipation of heat. Since the fan 140 is provided in the pipe 124 of the radiator, the fan 140 can blow air toward the first connection plate 121 . Because the wind blown by the fan 140 can be blocked by the first connection plate 121, the wind is diffused around the first connection plate 121, and then the direction of the wind blowing can be changed and blown to the heat sink 123, which can improve the heat dissipation efficiency of the heat sink 123 . The inner edge of the second connection plate 122 is also connected with the air guide fin 1224, which can guide a part of the wind to enter between the second connection plate 122 and the connection plate 125 through the air hole 1241, so as to speed up the air circulation speed between the cooling fins 126, thereby improving The heat dissipation speed of the heat dissipation fins 126 can improve heat dissipation efficiency.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express the preferred implementation of the utility model, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (8)

1. An active heat dissipation ceiling lamp, characterized in that it comprises: a substrate packaged with a plurality of LED lamp beads, a radiator connected to the substrate, a fan arranged in the radiator, and a radiator connected to the radiator The lampshade and the control board electrically connected with the LED lamp beads; The heat sink includes: a first connection pad connected to the substrate, a second connection pad coaxially arranged with the first connection pad, connected between the first connection pad and the second connection pad The cooling fins between, the pipe connected to the side of the second connection plate away from the first connection plate, the connection plate connected to the pipe, and the connection plate between the connection plate and the second connection plate heat dissipation fins, the second land is located on the side of the first land away from the substrate, and the fan is located in the duct; An opening is provided in the center of the second connection plate, the radius of the opening is equal to the radius of the inner wall of the pipe, the heat dissipation fins are arranged in multiple pieces and arranged at intervals, and the heat dissipation fins are also connected to the pipe, The side wall of the pipe is provided with a plurality of ventilation holes, the ventilation holes and the heat dissipation fins are arranged in a staggered manner, and the connecting plate is provided with an air inlet. 2 . The active heat dissipation ceiling lamp according to claim 1 , wherein the first connecting pad is circular. 3 . The active heat dissipation ceiling lamp according to claim 1 , wherein the ventilation hole is located at one end of the pipe connected to the second connection plate. 4 . 4. The active heat dissipation ceiling lamp according to claim 1, wherein the connection plate is circular, and the heat dissipation fins are arranged in a circle with the axis of the connection plate as the center line. 5. The active heat dissipation ceiling lamp according to claim 1, wherein the connecting plate is circular. 6. The active heat dissipation ceiling lamp according to claim 1, wherein the heat dissipation fin is provided with a through hole. 7. The active heat dissipation ceiling lamp according to claim 1, characterized in that, the vent holes are square. 8. The active heat dissipation ceiling lamp according to claim 1, wherein a support is provided inside the end of the pipe connected to the connection plate, and the side of the support facing the first connection plate is provided with the described fan.