Lamp with heat dissipation system

Abstract

The utility model relates to a lamp with a heat dissipation system, which comprises a base and a head part, the base comprises supporting arms arranged on two sides, and the base is rotatably connected with two ends of the head part through the supporting arms arranged on the two sides, the lamp is characterized in that a first sealing cavity capable of accommodating an electronic component assembly is arranged in the base; a heat dissipation cavity and a second sealing cavity which are of an up-down structure and are not communicated are formed in the head, a light-emitting assembly is arranged in the second sealing cavity, a heat dissipation assembly for dissipating heat of the light-emitting assembly is arranged in the heat dissipation cavity, and the first sealing cavity and the second sealing cavity are communicated so that airflow in the first sealing cavity and airflow in the second sealing cavity can circulate mutually. When the electronic component assembly emits heat, cold air in the first sealing cavity can carry part of heat to flow into the second sealing cavity, and the situation that the temperature of the first sealing cavity rises rapidly due to the fact that the heat generated by the electronic component assembly is concentrated in the first sealing cavity and cannot circulate is effectively prevented.

Description

Technical Field

[0001] This invention relates to the field of lighting technology, and more particularly to a lamp with a heat dissipation system. Background Technology

[0002] In existing technologies, more attention is paid to improving the heat dissipation of the lamp head. However, the heat generation of the base is often overlooked. The base mainly contains various electronic components such as power supply and circuit board. These electronic components also generate a relatively high amount of heat when they are working. Generally, only a cooling fan is specially set up in the base to dissipate heat from the electronic components. In order to make the base waterproof, the inside of the base is designed as a sealed space. This results in poor airflow of hot gas inside the base and poor heat dissipation. The risk of the electronic components burning out due to overheating will be further increased. Summary of the Invention

[0003] To solve one of the above-mentioned technical problems, this invention provides a lamp with a high-efficiency heat dissipation system.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0005] A lamp with a heat dissipation system includes a base and a head. The base includes support arms on both sides, which are rotatably connected to both ends of the head. The base has a first sealed cavity inside for accommodating electronic components. The head has a heat dissipation cavity and a second sealed cavity inside, which are vertically oriented and not interconnected. A light-emitting component is disposed in the second sealed cavity, and a heat dissipation component for dissipating heat from the light-emitting component is disposed in the heat dissipation cavity. The first sealed cavity and the second sealed cavity are connected to allow airflow between them.

[0006] The head includes a bracket, an upper cover, and a lower cover. The two sides of the bracket are rotatably connected to a support arm. The upper part of the bracket is sealed to the upper cover to form the heat dissipation cavity. The lower part of the bracket is sealed to the lower cover to form the second sealed cavity. An opening is provided in the middle of the bracket. The heat dissipation assembly includes a heat dissipation plate for mounting the light-emitting component. The heat dissipation plate seals the opening so that the heat dissipation cavity and the second sealed cavity are not connected.

[0007] The heat dissipation assembly also includes a ventilation mesh, a cooling fan, an air guide shroud, and multiple heat sinks arranged sequentially from top to bottom within the heat dissipation cavity. The multiple heat sinks are arranged side by side on the heat dissipation plate with intervals between them, and a heat dissipation air duct is formed between adjacent heat sinks. The air guide shroud has an upper air inlet, a lower air inlet, and an air guide duct connecting the upper air inlet and the lower air inlet. The cooling fan is located at the upper air inlet, and the heat sinks are located at the lower air inlet. Heat dissipation vents are provided on both sides of the upper cover, which are directly opposite the heat sinks. The cooling fan drives the airflow to pass sequentially through the ventilation mesh, the upper air inlet, the air guide duct, the lower air inlet, the heat dissipation air duct, and the heat dissipation vents.

[0008] The heat sink also has multiple grooves.

[0009] The support arm is provided with a bearing and a rotating shaft passing through the bearing. The support arm is rotatably connected to the head bracket through the rotating shaft.

[0010] A drive motor is installed inside the first sealed cavity. One end of the rotating shaft is fixedly connected to the bracket, and the other end of the rotating shaft is fixedly connected to a transmission gear. The drive motor rotates synchronously with the transmission gear through a transmission belt, thereby driving the head to rotate.

[0011] The rotating shaft has a first channel through it, and the bracket has connecting arms on both sides that are fixedly connected to one end of the rotating shaft. The connecting arms are hollow and have a second channel inside. The first sealing cavity and the second sealing cavity are connected through the first channel and the second channel.

[0012] The light-emitting component includes a first light-emitting plate, a lens, and a second light-emitting plate arranged from top to bottom in the second sealed cavity. The upper surface of the first light-emitting plate is fixedly connected to the heat sink, the upper end of the lens is connected to the first light-emitting plate, and the lower end of the lens is connected to the second light-emitting plate.

[0013] Both the heat sink and the first light-emitting plate have corresponding through holes, and the second channel and the second sealing cavity are connected through the through holes.

[0014] By adopting the above technical solution, the present invention has at least the following beneficial effects:

[0015] The base has a first sealed cavity that can accommodate electronic components, and the head has a second sealed cavity that is vertically oriented and not connected. The second sealed cavity houses the light-emitting component, and the heat dissipation cavity houses the heat dissipation component. The first and second sealed cavities are connected to allow airflow between them. When the electronic components heat up, the cool air in the first sealed cavity can carry some heat to the second sealed cavity, effectively preventing the heat from the electronic components from concentrating in the first sealed cavity and causing its temperature to rise rapidly. Meanwhile, the heat in the second sealed cavity can be dissipated through the heat dissipation component, thereby accelerating the overall heat dissipation efficiency of the lamp. Attached Figure Description

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

[0017] Figure 2 This is a sectional view of the lighting fixture;

[0018] Figure 3 This is a breakdown diagram of the head. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] In the description of this invention, it should be understood that the terms "center," "middle," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0021] As attached Figure 1 To be continued Figure 3As shown, a lamp with a heat dissipation system includes a base 1 and a head 2. The base 1 includes support arms 10 on both sides, which are rotatably connected to both ends of the head 2. The base 1 has a first sealed cavity 11 for accommodating electronic components. The head 2 has a heat dissipation cavity 20 and a second sealed cavity 21 that are arranged vertically and are not connected. A light-emitting component 4 is disposed in the second sealed cavity 21, and a heat dissipation component 5 for dissipating heat from the light-emitting component 4 is disposed in the heat dissipation cavity 20. The first sealed cavity 11 and the second sealed cavity 21 are connected to allow airflow between them. When the electronic components heat up, the cool air in the first sealed cavity 11 can carry some heat to the second sealed cavity 21, effectively preventing the heat generated by the electronic components from concentrating in the first sealed cavity 11 and causing the temperature of the first sealed cavity 11 to rise rapidly due to lack of airflow. The heat in the second sealed cavity 21 can be dissipated by the heat dissipation component 5, thereby accelerating the overall heat dissipation efficiency of the lamp. Preferably, a drive fan 9 for directly blowing electronic components is provided in the first sealed cavity 11, which can rapidly reduce the surface temperature of the components and accelerate the gas flow between the first sealed cavity 11 and the second sealed cavity 21.

[0022] As attached Figure 2 As shown, the head 2 includes a bracket 22, an upper cover 23, and a lower cover 24. The two sides of the bracket 22 are rotatably connected to the support arm 10. The upper part of the bracket 22 is sealed to the upper cover 23 to form the heat dissipation cavity 20. The lower part of the bracket 22 is sealed to the lower cover 24 to form the second sealed cavity 21. An opening 220 is provided in the middle of the bracket 22. The heat dissipation component 5 includes a heat dissipation plate 51 for mounting the light-emitting component 4. The heat dissipation plate 51 seals the opening 220 so that the heat dissipation cavity 20 and the second sealed cavity 21 are not connected. Specifically, the heat dissipation plate 51 is used to transfer the heat in the second sealed cavity 21 (which comes not only from the heat generated by the light-emitting component 4 but also from the heat generated by the electronic component) to the heat dissipation component 5 in the heat dissipation cavity 20. The heat dissipation cavity 20 is connected to the outside, so that the heat absorbed by the heat dissipation component 5 can be dissipated.

[0023] As attached Figure 2As shown, the heat dissipation assembly 5 also includes a ventilation mesh 52, a cooling fan 53, an air guide shroud 54, and a plurality of heat sinks 55 arranged sequentially from top to bottom within the heat dissipation cavity 20. The plurality of heat sinks 55 are arranged side by side on the heat dissipation plate 51 at intervals, and a heat dissipation air duct 550 is formed between adjacent heat sinks 55. The air guide shroud 54 has an upper air inlet, a lower air inlet, and an air guide duct 540 connecting the upper air inlet and the lower air inlet. The cooling fan 53 is located at the upper air inlet, and the heat sinks 55 are located at the lower air inlet. The upper cover 23 has heat dissipation openings 230 on both sides that are directly opposite to the heat sinks 55. The cooling fan 53 drives the airflow to pass sequentially through the ventilation mesh 52, the upper air inlet, the air guide duct 540, the lower air inlet, the heat dissipation air duct 550, and the heat dissipation openings 230, further improving the heat dissipation efficiency.

[0024] As attached Figure 3 As shown, the heat sink 51 is also provided with a plurality of grooves 510, which are formed by milling to reduce the weight of the heat sink 51, thereby reducing the overall weight of the lamp and facilitating installation, transportation and handling.

[0025] In this embodiment, the support arm 10 is provided with a bearing 31 and a rotating shaft 32 passing through the bearing 31. The support arm 10 is rotatably connected to the bracket 22 of the head 2 via the rotating shaft 32. A drive motor 6 is provided in the first sealed cavity 11. One end of the rotating shaft 32 is fixedly connected to the bracket 22, and the other end of the rotating shaft 32 is fixedly connected to a transmission gear 7. The drive motor 6 rotates synchronously with the transmission gear 7 via a transmission belt 8, thereby driving the head 2 to rotate. The automatic adjustment of the head 2 is achieved through the control method of the drive motor 6.

[0026] In this embodiment, the rotating shaft 32 has a first channel 33 through it. Both sides of the bracket 22 are provided with connecting arms 221 that are fixedly connected to one end of the rotating shaft 32. The connecting arms 221 are hollow inside and have a second channel 222. The first sealing cavity 11 and the second sealing cavity 21 are connected through the first channel 33 and the second channel 222 to realize the connection between the two sealing cavities. In addition to allowing airflow, it can also realize the connection of wires between the electronic component assembly and the light-emitting component 4.

[0027] In this embodiment, the light-emitting component 4 includes a first light-emitting plate 41, a lens 42, and a second light-emitting plate 43 arranged from top to bottom in the second sealed cavity 21. The upper end of the first light-emitting plate 41 is fixedly connected to the heat sink 51. The upper end of the lens 42 is connected to the first light-emitting plate 41, and the lower end of the lens 42 is connected to the second light-emitting plate 43. Specifically, LED beads are provided on both the first light-emitting plate 41 and the second light-emitting plate 43. Several lenses 42 are provided, and the number of lenses 42 corresponds one-to-one with the number of LED beads on the first light-emitting plate 41. The light-incident surface of the lens 42 is directly opposite to the LED beads. In addition, tempered glass and a frosting sheet are arranged from top to bottom below the second light-emitting plate 43 at the light outlet of the second sealed cavity 21.

[0028] Specifically, the heat sink 51 and the first light-emitting plate 41 extend to cover the channel opening of the second channel 222, thereby maximizing the area of ​​the heat sink 51 and the first light-emitting plate 41; in order for the second channel 222 to communicate with the second sealing cavity 21, the heat sink 51 and the first light-emitting plate 41 are both provided with corresponding through holes 40.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various equivalent changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lamp with heat dissipation system, comprising a base (1) and a head (2), the base (1) comprising support arms (10) arranged on both sides, the base (1) being rotatably connected to both ends of the head (2) through the support arms (10) arranged on both sides, characterized in that, The base (1) is internally provided with a first sealed cavity (11) capable of containing electronic components, the head (2) is internally provided with a heat dissipation cavity (20) and a second sealed cavity (21) in an up-down structure and not communicated, the second sealed cavity (21) is internally provided with a light emitting component (4), the heat dissipation cavity (20) is internally provided with a heat dissipation component (5) for dissipating heat of the light emitting component (4), the first sealed cavity (11) is communicated with the second sealed cavity (21) so that air in the two cavities flows to each other.

2. The luminaire of claim 1, wherein, The head (2) comprises a support (22), an upper cover (23) and a lower cover (24), the support (22) is rotatably connected with the support arm (10) at two sides thereof, the upper part of the support (22) is sealingly connected with the upper cover (23) to form the heat dissipation cavity (20), the lower part of the support (22) is sealingly connected with the lower cover (24) to form the second sealed cavity (21), the middle part of the support (22) is provided with an opening (220), the heat dissipation component (5) comprises a heat dissipation plate (51) for mounting the light emitting component (4), the heat dissipation plate (51) seals the opening (220) so that the heat dissipation cavity (20) and the second sealed cavity (21) are not communicated.

3. The luminaire of claim 2, wherein, The heat dissipation component (5) further comprises a ventilation net (52), a heat dissipation fan (53), a wind guide cover (54) and a plurality of heat dissipation fins (55) arranged in the heat dissipation cavity (20) from top to bottom, the plurality of heat dissipation fins (55) are arranged side by side on the heat dissipation plate (51) and are spaced apart, heat dissipation air ducts (550) are formed between adjacent heat dissipation fins (55), the wind guide cover (54) has an upper air inlet, a lower air inlet and a wind guide duct (540) communicated with the upper air inlet and the lower air inlet, the heat dissipation fan (53) is arranged at the upper air inlet, the heat dissipation fins (55) are arranged at the lower air inlet, the upper cover (23) is provided with heat dissipation ports (230) opposite to the heat dissipation fins (55) at two sides thereof, the heat dissipation fan (53) drives air to flow through the ventilation net (52), the upper air inlet, the wind guide duct (540), the lower air inlet, the heat dissipation air ducts (550) and the heat dissipation ports (230) in sequence.

4. The luminaire of claim 2, wherein, The heat dissipation plate (51) is further provided with a plurality of grooves (510).

5. The luminaire of claim 2, wherein, The support arm (10) is provided with a bearing (31) and a rotating shaft (32) penetrating the bearing (31), the support arm (10) is rotatably connected with the support (22) of the head (2) through the rotating shaft (32).

6. The luminaire of claim 5, wherein, The first sealed cavity (11) is provided with a driving motor (6), one end of the rotating shaft (32) is fixedly connected with the support (22), the other end of the rotating shaft (32) is fixedly connected with a transmission gear (7), the driving motor (6) is synchronously rotated with the transmission gear (7) through a transmission belt (8), thereby driving the head (2) to rotate.

7. The luminaire of claim 5, wherein, The rotation shaft (32) is axially formed with a first channel (33), both sides of the support (22) are provided with a connecting arm (221) fixedly connected with one end of the rotation shaft (32), the connecting arm (221) is hollowly formed with a second channel (222), and the first sealing cavity (11) and the second sealing cavity (21) are communicated through the first channel (33) and the second channel (222).

8. The luminaire of claim 7, wherein, The light emitting assembly (4) comprises a first light emitting plate (41), a lens (42) and a second light emitting plate (43) arranged from top to bottom in the second sealing cavity (21), the upper end surface of the first light emitting plate (41) is fixedly connected with the heat dissipation plate (51), the upper end of the lens (42) is connected with the first light emitting plate (41), and the lower end of the lens (42) is connected with the second light emitting plate (43).

9. The luminaire of claim 8, wherein, The heat dissipation plate (51) and the first light emitting plate (41) are both provided with a through hole (40) corresponding in position, and the second channel (222) and the second sealing cavity (21) are communicated through the through hole (40).

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