Lamp with heat dissipation system

Abstract

The utility model relates to a lamp with a radiating system, which comprises a light source, a radiator for radiating the light source and a power supply box for supplying power to the light source, an air guide cavity is arranged in the power supply box, an air inlet is arranged on the power supply box, and air outlets are arranged at two ends of the radiator. The cooling fan drives cold airflow to sequentially pass through the air inlet, the air guide cavity and the surface of the radiator for heat exchange and then blow out hot air through the air outlets in the two ends, the cooling system sucks the cold airflow from the middle of the top end of the radiator and then blows out from the two ends of the radiator, and therefore the cooling system enables the radiator to achieve the uniform cooling effect, and the cooling efficiency is improved. The heat dissipation effect is prevented from being influenced by the heat dissipation condition of high temperature and low temperature of the radiator; and the light source is further prevented from being burnt due to overheating, so that the service life of the lamp is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of lighting fixtures, and in particular to a lighting fixture with a heat dissipation system. Background Art

[0002] The heat dissipation structure of the existing lamp is at the top of the radiator and close to the two end receiving grooves of the radiator, and the heat dissipation fan is installed in the receiving groove. One fan sucks air from top to bottom. After the cold air passes through the radiator for heat exchange, the other fan blows out the hot air from bottom to top. The defects of this structure are: the heat dissipation of the radiator is uneven, which affects the heat dissipation efficiency of the radiator, resulting in the risk of the light board burning due to the heat of the light source not being able to dissipate in time. In addition, the power box is directly installed on the radiator, and the radiator will transfer heat to the power box. The power box will be heated, which will cause damage to the electronic components inside, thereby affecting the normal working state of the power box. Summary of the invention

[0003] The present invention is to solve one of the above technical problems and provide a lamp with a high-efficiency heat dissipation system.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] A lamp with a heat dissipation system includes a light source, a radiator for providing heat dissipation for the light source, and a power supply box fixedly arranged on the radiator and providing power for the light source, wherein an air guide cavity is arranged in the power supply box, an air inlet is arranged on the power supply box, air outlets are arranged at both ends of the radiator, the air guide cavity is communicated with the air inlet and the air outlet respectively, a heat dissipation fan is arranged in the air guide cavity, and the heat dissipation fan drives a cold air flow to pass through the air inlet, the air guide cavity, the radiator in sequence and then blow out through the air outlet.

[0006] It is further defined that a plurality of heat sinks are arranged at intervals on the radiator, a heat dissipation channel is formed between two adjacent heat sinks, a channel opening at one end of the heat dissipation channel is communicated with the air inlet through an air guide cavity, and a channel opening at the other end of the heat dissipation channel is communicated with the air outlet.

[0007] It is further defined as: a base plate is arranged between the radiator and the power box, the upper end of the base plate is fixedly connected to the power box, the lower end of the base plate is fixedly connected to the radiator, a first opening is opened on the base plate, the first opening is respectively connected to the channel opening at one end of the heat dissipation channel and the air guide cavity, and the cooling fan is fixedly installed at the first opening position so that the cooling fan is fixed in the air guide cavity.

[0008] It is further defined that the annular flange is sealed and connected to the bottom plate through a first waterproof component so that the air guide cavity and the electronic device accommodating cavity are not connected.

[0009] It is further defined that the power box is hollow inside to form an inner cavity with a cavity opening, the inner cavity is mainly composed of an air guide cavity and electronic device accommodating cavities located on both sides, and the bottom plate is sealed and connected to the cavity opening of the inner cavity through a second waterproof component.

[0010] It is further defined that the bottom plate is provided with a plurality of positioning protrusions, the heat sink is provided with positioning slots corresponding to the positioning protrusions, and the bottom plate is fixedly inserted into the positioning slots through the positioning protrusions.

[0011] It is further defined that the heat sink is provided with an installation cavity for installing the light source, the positioning protrusion and the positioning slot are both penetrated by a second opening, and the installation cavity is communicated with the electronic device accommodating cavity through the second opening.

[0012] It is further defined that the positioning protrusion is sealingly connected to the bottom of the positioning slot through a third waterproof component.

[0013] After adopting the above technical solution, the invention has at least the following beneficial effects:

[0014] 1. A lamp with a heat dissipation system, comprising a light source, a radiator for providing heat dissipation for the light source, and a power supply box for providing power for the light source, an air guide cavity is arranged in the power supply box, an air inlet is arranged on the power supply box, and air outlets are arranged at both ends of the radiator, a heat dissipation fan drives a cold air flow to pass through the air inlet, the air guide cavity, and the surface of the radiator in sequence for heat exchange, and then blows out the hot air through the air outlets at both ends, the heat dissipation system first sucks in the cold air flow from the top of the radiator, and then blows it out from both ends of the radiator, so that the heat dissipation system enables the radiator to achieve a uniform heat dissipation effect, avoids the heat dissipation situation of high temperature on one side and low temperature on the other side of the radiator, which affects the heat dissipation effect; further prevents the light source from burning due to overheating, so that the service life of the lamp is extended.

[0015] 2. A base plate is provided between the radiator and the power box, which can isolate the radiator and the power box to prevent the heat of the radiator from being directly transferred to the electronic components of the power box, thereby preventing the electronic components from being damaged due to overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the lamp;

[0017] Figure 2 It is an exploded view of the lamp;

[0018] Figure 3 It is one of the cross-sectional views in the longitudinal direction of the lamp;

[0019] Figure 4 This is the second cross-sectional view of the lamp in the longitudinal direction;

[0020] Figure 5 It is a cross-sectional view of the lamp in the transverse direction;

[0021] Figure 6 yes Figure 4 A local enlarged view of point A;

[0022] Figure 7 yes Figure 4 A partial enlarged view of point B;

[0023] Figure 8 It is a structural diagram of the power box. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments in the present application and the features described in the embodiments may be combined with each other. The present application is further described in detail below in conjunction with the drawings and specific embodiments.

[0025] As attached Figure 1 To Attachment Figure 3 , Attachment Figure 5 As shown, a lamp with a heat dissipation system includes a light source 1, a radiator 2 for providing heat dissipation for the light source 1, and a power supply box 3 for providing power for the light source 1. The light source 1 is an LED light board. An air guide cavity 31 is arranged in the power supply box 3. The power supply box 3 is fixedly mounted on the top of the radiator 2, and the air guide cavity 31 is preferably located at the top middle position or approximately the top middle position in the length direction of the radiator 2. An air inlet 32 ​​is arranged on the power supply box 3. Air outlets 20 are arranged at both ends of the radiator 2. The air guide cavity 31 is communicated with the air inlet 32 ​​and the air outlet 20 respectively. A cooling fan 4 is arranged in the air guide cavity 31. The cooling fan 4 drives the cold air flow to pass through the air inlet 32, the air guide cavity 31, and the radiator 2 in sequence and then blow it out through the air outlet 20. Specifically, the cooling fan 4 drives the cold air flow to pass through the air inlet 32, the air guide cavity 31, and the surface of the radiator 2 in sequence for heat exchange and then blows out the hot air through the air outlets 20 at both ends.

[0026] To further explain, the heat dissipation system first sucks in cold air from the middle of the top of the radiator 2, and then blows it out from both ends of the radiator 2. Therefore, the heat dissipation system enables the radiator 2 to achieve uniform heat dissipation, avoiding the situation where the radiator has high temperature on one side and low temperature on the other side, which affects the heat dissipation effect; it further prevents the light source from burning due to overheating, thereby extending the service life of the lamp.

[0027] As attached Figure 2 , Attachment Figure 3 and attached Figure 5As shown, a plurality of heat sinks are arranged at intervals on the radiator 2, and a heat dissipation channel 201 is formed between two adjacent heat sinks. The channel opening at one end of the heat dissipation channel 201 is communicated with the air inlet 32 ​​through the air guide cavity 31, and the channel opening at the other end of the heat dissipation channel 201 is communicated with the air outlet 20. After the cold air flow is sucked in, it flows in the plurality of heat dissipation channels 201 to achieve the effect of heat exchange.

[0028] As attached Figure 2 and attached Figure 3 As shown, a bottom plate 5 is arranged between the radiator 2 and the power box 3, the upper end of the bottom plate 5 is fixedly connected to the power box 3, and the lower end of the bottom plate 5 is fixedly connected to the radiator 2. At this time, the lower end surface of the bottom plate 5 and the two adjacent heat sinks jointly form the heat dissipation channel 201. When the cold air flows through the heat dissipation channel 201, the lower end surface of the bottom plate 5 can also exchange heat. A first opening 51 is opened on the bottom plate 5. Specifically, the position of the first opening 51 corresponds to the position of the air guide cavity 31. The first opening 51 is connected to The channel opening at one end of the heat dissipation channel 201 and the air guide cavity 31, the heat dissipation fan 4 is fixedly installed at the position of the first opening 51 so that the heat dissipation fan 4 is fixed in the air guide cavity 31; the first opening 51 is square in shape, and has a corner fixing block at the corner of the first opening 51, and the heat dissipation fan 4 is fixed to the corner by fixing screws; further, the base plate 5 can also isolate the radiator 2 and the power box 3, so as to prevent the heat of the radiator 2 from being directly transferred to the electronic components of the power box 3, thereby preventing the electronic components from being damaged due to overheating.

[0029] As attached Figure 8 As shown, the air guide cavity 31 is formed by the protrusion of the annular flange 33 in the power box 3. The power box 3 is also provided with electronic device accommodating cavities 34 located on both sides of the air guide cavity 31. Electronic components are installed in the electronic device accommodating cavities 34. There is a spacing between the side wall in the power box 3 and the annular flange 33 to form a connecting channel 30 connected to the electronic device accommodating cavities 34 on both sides. The electronic components in the electronic device accommodating cavities 34 on both sides can be electrically connected by passing the power cord through the connecting channel 30.

[0030] As attached Figure 4 and attached Figure 6 As shown, the annular flange 33 is sealed and connected to the bottom plate 5 through the first waterproof part 6 so that the air guide cavity 31 and the electronic device accommodating cavity 34 are not connected, so that the air guide cavity 31 and the electronic device accommodating cavity 34 are independent of each other, and heat, water vapor, dust, etc. are prevented from entering the electronic device accommodating cavity 34 from the air guide cavity 31.

[0031] As attached Figure 4 and attached Figure 7As shown, the power box 3 is hollow inside to form an inner cavity with a cavity opening, and the inner cavity is mainly composed of an air guide cavity 31 and electronic device accommodating cavities 34 located on both sides. The bottom plate 5 is sealed and connected to the cavity opening of the inner cavity through the second waterproof component 7. When the bottom plate 5, the power box 3 and the second waterproof component 7 are fixedly connected, the bottom plate 5 can close the cavity opening of the inner cavity (that is, the cavity opening of the electronic device accommodating cavity 34), so that the electronic device accommodating cavity 34 is completely closed, thereby achieving a waterproof and dustproof effect.

[0032] As attached Figure 2 As shown, the base plate 5 is provided with a plurality of positioning protrusions 52, and the radiator 2 is provided with positioning slots 21 corresponding to the positioning protrusions 52, and the base plate 5 is fixedly inserted in the positioning slots 21 through the positioning protrusions 52; during assembly, the base plate 5 is first fixedly connected to the power box 3, and then the base plate 5 is quickly installed on the top of the radiator 2 through the cooperation of the positioning protrusions 52 and the positioning slots 21 to improve the assembly efficiency.

[0033] As attached Figure 4 and attached Figure 7 As shown, the heat sink 2 is provided with a mounting cavity 22 for installing the light source 1, and the positioning protrusion 52 and the positioning slot 21 are both penetrated by a second opening 200, and the mounting cavity 22 is communicated with the electronic device accommodating cavity 34 through the second opening 200 to achieve electrical connection between the light source 1 in the mounting cavity 22 and the electronic components in the electronic device accommodating cavity 34.

[0034] As attached Figure 4 and attached Figure 7 As shown, the positioning protrusion 52 is sealed and connected to the bottom of the positioning slot 21 through the third waterproof component 8; the third waterproof component 8 can enhance the air tightness of the electronic device accommodating cavity 34 and the installation cavity 22; further illustrating, the above-mentioned first waterproof component 6, second waterproof component 7 and third waterproof component 8 are all waterproof rubber rings.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various equivalent changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lamp with a heat dissipation system, comprising a light source (1), a heat sink (2) for providing heat dissipation for the light source (1), and a power supply box (3) fixedly arranged on the heat sink (2) and providing power for the light source (1), characterized in that: An air guide cavity (31) is arranged in the power box (3), an air inlet (32) is arranged on the power box (3), air outlets (20) are arranged at both ends of the radiator (2), the air guide cavity (31) is communicated with the air inlet (32) and the air outlet (20) respectively, a cooling fan (4) is arranged in the air guide cavity (31), and the cooling fan (4) drives a cold air flow to pass through the air inlet (32), the air guide cavity (31), the radiator (2) in sequence, and then blow out through the air outlet (20).

2. The lamp with a heat dissipation system according to claim 1, characterized in that: A plurality of heat sinks are arranged at intervals on the radiator (2), a heat dissipation channel (201) is formed between two adjacent heat sinks, a channel opening at one end of the heat dissipation channel (201) communicates with the air inlet (32) through the air guide cavity (31), and a channel opening at the other end of the heat dissipation channel (201) communicates with the air outlet (20).

3. The lamp with a heat dissipation system according to claim 2, characterized in that: A base plate (5) is provided between the radiator (2) and the power box (3); the upper end of the base plate (5) is fixedly connected to the power box (3); the lower end of the base plate (5) is fixedly connected to the radiator (2); a first opening (51) is provided on the base plate (5); the first opening (51) is respectively connected to a channel opening at one end of the heat dissipation channel (201) and the air guide cavity (31); the heat dissipation fan (4) is fixedly installed at the position of the first opening (51) so that the heat dissipation fan (4) is fixed in the air guide cavity (31).

4. The lamp with a heat dissipation system according to claim 3, characterized in that: The air guide cavity (31) is formed by a protruding annular flange (33) in the power box (3). The power box (3) is also provided with electronic device accommodating cavities (34) located on both sides of the air guide cavity (31). There is a distance between the side wall in the power box (3) and the annular flange (33) to form a connecting channel (30) connected to the electronic device accommodating cavities (34) on both sides.

5. The lamp with a heat dissipation system according to claim 4, characterized in that: The annular flange (33) is sealedly connected to the bottom plate (5) via a first waterproof component (6) so that the air guide cavity (31) and the electronic device accommodating cavity (34) are not in communication.

6. The lamp with a heat dissipation system according to claim 5, characterized in that: The power box (3) is hollow inside to form an inner cavity with an opening, the inner cavity mainly consisting of an air guide cavity (31) and electronic device accommodating cavities (34) located on both sides, and the bottom plate (5) is sealed and connected to the opening of the inner cavity through a second waterproof component (7).

7. The lamp with a heat dissipation system according to claim 4, characterized in that: The bottom plate (5) is provided with a plurality of positioning protrusions (52), the heat sink (2) is provided with positioning slots (21) corresponding to the positioning protrusions (52), and the bottom plate (5) is fixedly inserted into the positioning slots (21) via the positioning protrusions (52).

8. The lamp with a heat dissipation system according to claim 7, characterized in that: The heat sink (2) is provided with a mounting cavity (22) for mounting the light source (1); the positioning protrusion (52) and the positioning slot (21) are both provided with a second opening (200) extending therethrough; the mounting cavity (22) is communicated with the electronic device accommodating cavity (34) through the second opening (200).

9. The lamp with a heat dissipation system according to claim 8, characterized in that: The positioning protrusion (52) is sealingly connected to the bottom of the positioning slot (21) via a third waterproof component (8).

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