A luminaire heat dissipation system

Abstract

This invention relates to a lamp heat dissipation system, comprising a housing with a receiving cavity. The receiving cavity contains a first partition and a second partition. The receiving cavity is divided into a first chamber, a second chamber, and a third chamber from top to bottom. The first chamber has a first air vent communicating with the outside. The first partition has a first opening, and the second partition has a second opening. The first and second chambers communicate through the first opening, and the second and third chambers communicate through the second opening. A cooling fan is fixedly installed at the first opening of the first partition. The cooling fan drives cool air from the outside to flow sequentially through the first air vent, the first chamber, the first opening, the second chamber, the second opening, and the third chamber. A single cooling fan can simultaneously dissipate heat from electronic components and the heat sink, effectively reducing the need for additional cooling fans, costs, noise, and system failure rates, while also saving internal space in the lamp.

Description

Technical Field

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

[0002] To ensure the proper operation of lighting fixtures, heat sinks for the light source and electronic components are equipped with cooling fans to remove heat from their surfaces through forced convection. However, this design has the following inherent drawbacks in practical applications:

[0003] 1. Separate cooling fans are required for the heat sink of the light source and electronic components. This not only increases the number of fans and the material cost, but also introduces complex airflow design problems due to the coordinated operation of multiple fans, further increasing the overall system cost.

[0004] 2. Adding extra fans will occupy the limited internal space of the device, potentially affecting the layout of other components or obstructing airflow. Furthermore, multiple fans operating in parallel will lead to cumulative power consumption, reducing system energy efficiency, and significantly impacting battery life, especially for portable devices.

[0005] 3. An increased number of fans will introduce greater operating noise and reduce user experience; at the same time, as mechanical fans are vulnerable parts, an increase in their number will directly lead to a higher system failure rate and a corresponding increase in maintenance costs.

[0006] Therefore, there is an urgent need for an innovative heat dissipation system design that can achieve efficient and coordinated heat dissipation of multiple electronic components without adding extra fans, by optimizing the heat sink structure or heat flow path, thereby solving the multiple contradictions of cost, space and energy efficiency in the existing technology. Summary of the Invention

[0007] To solve one of the above-mentioned technical problems, this invention provides a novel lighting heat dissipation system in which electronic components and heat sinks can share an air duct, and a single cooling fan can simultaneously dissipate heat from both electronic components and heat sinks. This effectively reduces the configuration, cost, noise, and system failure rate of cooling fans, while also saving internal space in the lighting fixture.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0009] A lighting heat dissipation system includes a housing with a receiving cavity. A first partition and a second partition are spaced apart from top to bottom within the receiving cavity, dividing the cavity into a first chamber, a second chamber, and a third chamber. The first chamber has a first vent communicating with the outside. The second chamber is used to install electronic components, and the third chamber is used to install a light source component. The first partition has a first opening, and the second partition has a second opening. The first chamber and the second chamber communicate through the first opening, and the second chamber and the third chamber communicate through the second opening. A cooling fan is fixedly installed at the first opening of the first partition, and the cooling fan can drive cool air from the outside to flow sequentially through the first vent, the first chamber, the first opening, the second chamber, the second opening, and the third chamber.

[0010] Further defined, the third cavity is provided with a heat sink for mounting the light source assembly. The heat sink is hollow and cylindrical, forming a channel. When the upper end of the heat sink is fixedly connected to the second partition, the second opening and the channel are directly opposite each other, so that the second opening and the channel are connected.

[0011] Further defined, the heat sink has a polygonal cross-section, forming multiple flat surfaces on its outer periphery, and the light source assembly includes a plurality of first light-emitting lamp panels, which are correspondingly fixed on the flat surfaces.

[0012] Further defined, the light source assembly also includes a second light-emitting plate fixedly disposed at the lower end of the heat sink, the shape of the second light-emitting plate being the same as or similar to the cross-sectional shape of the heat sink.

[0013] Further defined, each corner of the heat sink is provided with a second air vent, a gap is formed between adjacent first light-emitting panels, and the channel, the second air vent and the gap are interconnected.

[0014] Further specified, the heat sink has a hexagonal cross-section.

[0015] Further defined, the heat sink has a plurality of heat sink fins extending along its longitudinal direction fixedly disposed within its channel.

[0016] Further defined, the electronic component includes a circuit board located in the third cavity and fixedly connected to the lower end face of the second partition. The circuit board is ring-shaped and surrounds the heat sink. The electronic component also includes a power supply device group installed in the second cavity, which supplies power to the light source component through the circuit board.

[0017] Further defined, the outer shell includes an upper shell and a lower shell, the first partition and the second partition are fixed inside the upper shell, the third cavity is mainly composed of the lower shell and the second partition, and the lower shell is made of a light-transmitting material.

[0018] Further specified, the outer shell is a tubular body.

[0019] By adopting the above technical solution, the present invention has at least the following beneficial effects:

[0020] The cooling fan drives cool air from the outside to flow sequentially through the first air vent, the first cavity, the first opening, the second cavity, the second opening, and the third cavity. When the cool air flows from top to bottom into the second cavity, it can exchange heat with the electronic components, and when the cool air continues to flow into the third cavity, it can exchange heat with the heat sink. The electronic components and the heat sink can share the same air duct, eliminating the need for separate cooling fans for each. A single cooling fan can simultaneously meet the cooling needs of both, effectively reducing the configuration, cost, noise, and system failure rate of cooling fans, while also saving internal space in the lighting fixture. Attached Figure Description

[0021] Figure 1 It is a structural diagram of the lighting fixture;

[0022] Figure 2 This is a sectional view of the lighting fixture;

[0023] Figure 3 This is a structural diagram of a radiator. Detailed Implementation

[0024] 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.

[0025] 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.

[0026] As attached Figure 1 To be continued Figure 3As shown, a lamp heat dissipation system includes a housing 1 with a receiving cavity 10. The receiving cavity 10 of the housing 1 has a first partition 11 and a second partition 12 arranged sequentially from top to bottom, such that the receiving cavity 10 is divided into a first cavity 101, a second cavity 102 and a third cavity 103 from top to bottom. The first cavity 101 has a first air vent 100 communicating with the outside, and external cold air enters the first cavity 101 through the air vent.

[0027] Specifically, the second cavity 102 is used to install electronic components, which mainly include a power supply device group 52 and a control circuit board 51 to provide DC current to the light source assembly; the third cavity 103 is used to install the light source assembly, which mainly includes a first light-emitting board 41 and a second light-emitting board, with LED beads of different colors in the first light-emitting board 41 and the second light-emitting board.

[0028] Specifically, the first partition 11 has a first opening 111, the second partition 12 has a second opening 121, the first cavity 101 and the second cavity 102 are connected through the first opening 111, and the second cavity 102 and the third cavity 103 are connected through the second opening 121. The positions of the first opening 111 and the second opening 121 are opposite to each other to form a shared air duct. The cooling fan 2 is fixedly connected to the upper end face of the first partition 11. The cooling fan 2 is located in the first cavity 101 and is fixed at the first opening 111, so that the air outlet of the cooling fan 2 is directly opposite the first opening 111. At this time, the cooling fan 2 can drive the outside cold air to flow sequentially through the first air outlet 100, the first cavity 101, the first opening 111, the second cavity 102, the second opening 121 and the third cavity 103. When cold air flows into the second cavity 102 from top to bottom, it can exchange heat with the electronic components. When the cold air continues to flow into the third cavity 103, it can exchange heat with the heat sink 3. The electronic components and the heat sink 3 can share the same air duct, without the need to configure cooling fans 2 for each of them. The cooling needs of both can be met by a single cooling fan 2, thereby effectively reducing the configuration, cost, noise and system failure rate of the cooling fan 2, and also effectively saving the internal space of the lamp.

[0029] In this embodiment, a heat sink 3 for mounting the light source assembly is provided inside the third cavity 103. The heat sink 3 is hollow and cylindrical, forming a channel 30. When the upper end of the heat sink 3 is fixedly connected to the second partition 12, the second opening 121 and the channel 30 are directly opposite each other, allowing the second opening 121 and the channel 30 to communicate in the forward direction. Cold air flows directly into the channel 30 from the second opening 121, where heat exchange occurs between the cold air and the interior of the heat sink 3. This ensures sufficient, uniform, and efficient heat dissipation from the heat sink 3. Furthermore, a plurality of heat dissipation fins 33 extending longitudinally are fixed inside the channel 30 of the heat sink 3, further improving the heat dissipation efficiency of the heat sink 3.

[0030] In this embodiment, the heat sink 3 has a polygonal cross-section, specifically, the heat sink 3 has a hexagonal cross-section, so that the outer peripheral surface of the heat sink 3 has multiple flat surfaces 31. The heat sink 3 is made of aluminum. The light source assembly includes a plurality of first light-emitting lamp plates 41, which are correspondingly fixed on the flat surfaces 31, so that the heat sink 3 has multiple light-emitting surfaces to expand the illumination range of the lamp.

[0031] In this embodiment, the light source assembly further includes a second light-emitting plate 42 fixedly disposed at the lower end of the heat sink 3. The shape of the second light-emitting plate is the same as or similar to the cross-sectional shape of the heat sink 3. While the lower end surface of the heat sink 3 can emit light, the shape of the second light-emitting plate and the lower end surface of the heat sink 3 are highly matched, increasing the structural compactness.

[0032] As attached Figure 3 As shown, a second air vent 32 is provided through each corner of the heat sink 3, and a gap is formed between adjacent first light-emitting panels 41. The channel 30, the second air vent 32 and the gap are interconnected, so that the air in the channel 30 can be discharged from the second air vent 32 and the gap in a timely manner, preventing hot air from being excessively concentrated in the channel 30; the second air vent 32 provides clearance space for the components of the first light-emitting panel 41.

[0033] As attached Figure 2 As shown, the electronic component includes a circuit board 51 located inside the third cavity 103 and fixedly connected to the lower end face of the second partition 12. The circuit board 51 is ring-shaped and surrounds the heat sink 3. The electronic component also includes a power supply device group 52 installed inside the second cavity 102. The power supply device group 52 supplies power to the light source component through the circuit board 51. The circuit board 51 is ring-shaped, making the internal structure of the lamp more compact.

[0034] As attached Figure 1As shown, the outer shell 1 is a tubular body, and the outer shell 1 includes an upper shell 13 and a lower shell 14. The first partition 11 and the second partition 12 are fixed inside the upper shell 13. The third cavity 103 is mainly composed of the lower shell 14 and the second partition 12. The lower shell 14 is made of a light-transmitting material. The inner wall of the upper shell 13 has internal threads, and the outer peripheral surface of the lower shell 14 near the top end is provided with external threads, so that the upper shell 13 and the lower shell 14 can be threadedly connected, increasing the stability of their connection.

[0035] 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 luminaire heat dissipation system, characterized by, The enclosure (1) includes a housing (10) having a receiving cavity (10). Within the receiving cavity (10), a first partition (11) and a second partition (12) are arranged sequentially from top to bottom, such that the receiving cavity (10) is divided into a first cavity (101), a second cavity (102), and a third cavity (103) from top to bottom. The first cavity (101) has a first air vent (100) communicating with the outside. The second cavity (102) is used to install electronic components, and the third cavity (103) is used to install a light source assembly. The first partition (11) has a first opening (111). The second partition (12) has a second opening (121). The first cavity (101) and the second cavity (102) are connected through the first opening (111). The second cavity (102) and the third cavity (103) are connected through the second opening (121). A cooling fan (2) is fixedly installed at the first opening (111) of the first partition (11). The cooling fan (2) can drive the outside cold air to flow sequentially through the first air vent (100), the first cavity (101), the first opening (111), the second cavity (102), the second opening (121), and the third cavity (103).

2. The heat dissipation system of claim 1, wherein, The third cavity (103) is provided with a heat sink (3) for mounting the light source assembly. The heat sink (3) is hollow columnar, forming a channel (30). When the upper end of the heat sink (3) is fixedly connected to the second partition (12), the second opening (121) and the channel (30) are directly opposite each other, so that the second opening (121) and the channel (30) are connected.

3. The heat dissipation system of claim 2, wherein, The heat sink (3) has a polygonal cross-section, so that the outer peripheral surface of the heat sink (3) forms multiple flat surfaces (31). The light source assembly includes several first light-emitting lamp plates (41), and the first light-emitting lamp plates (41) are correspondingly fixed on the flat surfaces (31).

4. The heat dissipation system of claim 3, wherein, The light source assembly also includes a second light-emitting plate (42) fixedly disposed at the lower end of the heat sink (3), the shape of the second light-emitting plate being similar to the cross-sectional shape of the heat sink (3).

5. The heat dissipation system of claim 3, wherein, A second air vent (32) is provided through each corner of the radiator (3), and a gap is formed between adjacent first light-emitting panels (41). The channel (30), the second air vent (32) and the gap are interconnected.

6. The heat dissipation system according to claim 3, characterized in that, The heat sink (3) has a hexagonal cross-section.

7. The heat dissipation system of claim 2, wherein, The radiator (3) has a plurality of heat sink fins (33) that extend along its longitudinal direction fixed inside the channel (30).

8. The heat dissipation system of claim 2, wherein, The electronic component includes a circuit board (51) located inside the third cavity (103) and fixedly connected to the lower end face of the second partition (12). The circuit board (51) is ring-shaped and surrounds the heat sink (3). The electronic component also includes a power supply device group (52) installed in the second cavity (102). The power supply device group (52) supplies power to the light source component through the circuit board (51).

9. The heat dissipation system according to any one of claims 1 to 8, wherein, The outer shell (1) includes an upper shell (13) and a lower shell (14). The first partition (11) and the second partition (12) are fixed inside the upper shell (13). The third cavity (103) is mainly composed of the lower shell (14) and the second partition (12), and the lower shell (14) is made of a light-transmitting material.

10. The heat dissipation system according to claim 9, characterized in that, The outer shell (1) is a tubular body.

Images