High heat dissipation LED lamp

Abstract

The application relates to the technical field of LED lamps, in particular to a high-heat-dissipation LED lamp which comprises a shell and an LED lamp plate detachably connected to the shell, a plurality of ventilation openings are formed in the outer wall of the shell and communicated with the inner cavity, a plurality of heat dissipation fins are arranged in the inner cavity of the shell, the heat dissipation fins are in close contact with the surface of the LED lamp plate, and the heat dissipation fins are in close contact with the inner wall of the shell. The application remarkably increases the heat dissipation surface area by arranging a plurality of heat dissipation fins in close contact with the surface of the LED lamp plate in the inner cavity of the shell, provides a direct heat conduction path, efficiently conducts the heat generated by the LED lamp plate to the fins and the shell, and dissipates the heat to the external environment through the air flow of the ventilation openings, so that the overall heat dissipation performance of the LED lamp is comprehensively improved.

Description

Technical Field

[0001] This application relates to the field of LED lighting fixtures, and more particularly to an LED lamp with high heat dissipation. Background Technology

[0002] LEDs have the advantages of high luminous efficiency, energy saving and long life, and their applications are becoming increasingly widespread. When LEDs are used in daily lighting, multiple high-power LEDs are usually combined in a single lamp to achieve the required illuminance.

[0003] In related technologies, high-power LED lamps use aluminum housings to provide good thermal conductivity and heat dissipation, with an insulating layer injection-molded onto the housing surface. The housing and the screw sleeve are connected by connectors; the inner side of the screw sleeve is electrically connected to the PCB board via wires, and the outer side of the screw sleeve is electrically connected to the lamp holder. The connectors are made of plastic to insulate the housing and screw sleeve from each other, and are simultaneously fixed to the housing during the injection-molded insulating layer. However, even with the good thermal conductivity and heat dissipation of aluminum housings, high-power LED lamps still suffer from severe overheating under prolonged use, leading to faster hardware aging and limiting their lifespan. Utility Model Content

[0004] To improve the heat dissipation of LED lights, this application provides an LED light with high heat dissipation performance.

[0005] This application provides a high heat dissipation LED lamp, which adopts the following technical solution:

[0006] A high heat dissipation LED lamp includes a housing and an LED lamp board detachably connected to the housing. The outer wall of the housing has multiple ventilation holes communicating with the inner cavity. The inner cavity of the housing has multiple heat dissipation fins. The heat dissipation fins are in contact with the surface of the LED lamp board and the inner wall of the housing.

[0007] By adopting the above technical solution, multiple ventilation openings are set on the outer shell to achieve natural convection of air inside and outside the shell, effectively expelling the hot air accumulated inside. At the same time, multiple heat dissipation fins are set in the inner cavity of the shell to be closely attached to the surface of the LED light board, which significantly increases the heat dissipation surface area and provides a direct heat conduction path. The heat generated by the LED light board is efficiently conducted to the fins and the shell, and then dissipated to the external environment through the air flow of the ventilation openings. This comprehensively improves the overall heat dissipation performance of the LED light and overcomes the problems of severe heat generation, accelerated hardware aging, and limited lifespan of existing high-power LED lights after long-term use.

[0008] Optionally, a fan is provided in the inner cavity of the housing.

[0009] By adopting the above technical solution, by adding a fan inside the housing to actively force airflow, the airflow speed and flow rate through the ventilation port and heat dissipation fin area are greatly enhanced. Especially when the natural convection heat dissipation efficiency is insufficient or the internal temperature of the lamp is high, it can provide stronger active heat dissipation capability, further significantly reducing the temperature inside the LED light board and lamp, and ensuring its stable operation and long life under higher power or more severe operating conditions.

[0010] Optionally, the housing includes a detachably connected upper housing and a lower housing. The upper housing is made of plastic, and the lower housing is made of aluminum. The heat dissipation fins are disposed on the cavity wall of the lower housing and arranged around the central axis of the lower housing.

[0011] By adopting the above technical solution, and designing the housing as a detachable upper housing (plastic part) and lower housing (aluminum part), an optimized combination of material properties is achieved: the plastic upper housing provides electrical insulation and lightweighting, while the aluminum lower housing focuses on supporting the heat dissipation fins and providing an efficient heat conduction path. The vents on the upper housing are used for air intake, and the vents on the lower housing are used for air exhaust. At the same time, the detachable structure greatly facilitates the installation, maintenance, and replacement of internal components of the lamp (such as LED light boards and fans). By placing the heat dissipation fins directly on the cavity wall of the aluminum lower housing, heat can be quickly and directly conducted to the entire lower housing through the fins and dissipated through its outer surface, improving heat dissipation efficiency and reliability.

[0012] Optionally, a heat sink made of aluminum is detachably connected to the surface of the LED panel away from the LED.

[0013] By adopting the above technical solution, an aluminum heat sink is set on the non-light-emitting surface (back side) of the LED light board, which directly and effectively expands the heat dissipation area of ​​the LED light board itself. By utilizing the excellent thermal conductivity of aluminum, the core heat generated by the LED chip is dissipated from the light board more quickly and evenly, which relieves the pressure on the heat dissipation path of the housing and provides a better foundation for the subsequent heat transfer to the heat dissipation fins of the housing or direct dissipation, thereby reducing the operating temperature of the LED light board from the source.

[0014] Optionally, the heat sink is also provided with multiple heat sink fins on the surface away from the LED light panel, and the heat sink fins on the housing are arranged around the heat sink.

[0015] By adopting the above technical solution, multiple heat dissipation fins are also set on the back of the heat sink (the surface away from the LED light board), which further increases the effective heat dissipation surface area of ​​the heat sink itself and optimizes the heat exchange efficiency between the heat sink and the air. The heat sink and the heat dissipation fins on the shell work together to form an air duct, so that the heat conducted from the LED light board to the heat sink can be dissipated into the surrounding air more quickly, which significantly enhances the heat dissipation capacity of the heat sink and thus more effectively reduces the core temperature of the LED light board.

[0016] Optionally, the heat sink fins have a mounting groove on their surface near the LED light panel, and the LED light panel has a through hole communicating with the mounting groove. The LED light panel and the heat sink fins are fixedly connected to the mounting groove by screws, through holes and mounting groove.

[0017] By adopting the above technical solution, by opening mounting grooves on the heat sink fins and corresponding through holes on the LED light board, and using screws for connection, a stable, reliable and easy-to-operate mechanical connection method is provided. This ensures that the LED light board and the heat sink fins can be in close contact, minimizing contact thermal resistance and ensuring the physical basis for efficient heat conduction from the LED light board to the heat sink fins. At the same time, the screw connection facilitates assembly, disassembly and maintenance.

[0018] Optionally, the heat dissipation fins are provided with reinforcing ribs, and the mounting grooves are formed on the reinforcing ribs.

[0019] By adopting the above technical solution, reinforcing ribs are formed on the heat dissipation fins and mounting grooves are opened on the reinforcing ribs. On the one hand, the structural strength and rigidity of the heat dissipation fins themselves are enhanced, preventing them from deforming due to thermal stress or mechanical external force, and ensuring the reliability of long-term use. On the other hand, setting the mounting groove in the thicker reinforcing rib area provides a more solid foundation for threaded connection, ensuring the stability and durability of screw connection, and indirectly ensuring the continuous close contact of the thermal interface.

[0020] Optionally, the lower housing includes two detachably connected flap housings, which are fastened together to form a complete lower housing.

[0021] By adopting the above technical solution, the aluminum lower shell is further designed as two detachable and connected segmented shells, which are fastened together to form a complete shell. This segmented structure greatly simplifies the manufacturing process of the lower shell, reduces mold costs, and significantly improves assembly convenience, while also facilitating subsequent maintenance.

[0022] Optionally, both of the aforementioned petal housings are provided with a positioning plate and a positioning post. The positioning plate has a positioning hole for the positioning post to be inserted, and the positioning post has a fixing groove for the screw to be screwed in. When the two petal housings are fastened together, the positioning post on one of the petal housings is inserted into the positioning hole on the other petal housing, and the positioning hole on the petal housing is for the positioning post on the other petal housing to be inserted.

[0023] By adopting the above technical solution, positioning plates with positioning holes and positioning posts with fixing grooves are set on both petal shells. Specifically, a positioning plate is formed on the end of one petal shell that engages with the other, and a positioning post is formed on the other end. Two identical petal shells are manufactured using the same mold, resulting in at least two pairs of positioning plates and positioning posts on the entire lower shell. This improves the connection stability of the two petal shells while reducing mold costs. During engagement, the positioning post is inserted into the positioning hole, providing a fast and precise positioning and docking mechanism, ensuring accurate positioning of the two petal shells during engagement, significantly improving assembly efficiency and precision. Simultaneously, the fixing groove design on the positioning post provides a convenient channel for screw fixing, making the connection operation between the two petal shells simpler and more reliable, and ensuring the structural integrity of the assembled lower shell.

[0024] Optionally, a positioning block is provided on the surface of the lower housing near the upper housing, and the positioning block is used to abut against the inner wall of the upper housing.

[0025] By adopting the above technical solution, a positioning block is set on the surface of the lower shell near the upper shell. When the upper and lower shells are assembled, the positioning block can abut against the inner wall of the upper shell, providing a precise positioning reference and support point for the assembly of the upper and lower shells. This ensures that the relative position of the two shells is accurate and stable when they are connected, which not only improves the assembly efficiency and quality, but also ensures the overall structural strength of the shells after assembly, and indirectly benefits the stable working environment of the internal heat dissipation components.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. Multiple heat dissipation fins are set in the inner cavity of the housing, which are closely attached to the surface of the LED light board. This significantly increases the heat dissipation surface area and provides a direct heat conduction path. The heat generated by the LED light board is efficiently conducted to the fins and the housing, and then dissipated to the external environment through the air flow of the ventilation port, thereby comprehensively improving the overall heat dissipation performance of the LED light.

[0028] 2. By designing the housing as a detachable upper housing (plastic part) and lower housing (aluminum part), an optimized combination of material properties is achieved: the plastic upper housing provides electrical insulation and lightweight, while the aluminum lower housing focuses on supporting the heat dissipation fins and providing an efficient heat conduction path;

[0029] 3. By setting positioning plates with positioning holes and positioning pins with fixing grooves on both lobe shells, the connection stability of the two lobe shells is improved while reducing mold costs. When the two lobe shells are fastened together, the positioning pins are inserted into the positioning holes, providing a fast and accurate positioning and docking mechanism. This ensures that the two lobe shells are in the correct position when they are fastened together, and significantly improves assembly efficiency and accuracy. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of this application.

[0031] Figure 2 This is a schematic diagram of the internal structure of the housing that highlights the heat dissipation fins in this application.

[0032] Figure 3 This is a schematic diagram of the structure of the upper shell that highlights the present application.

[0033] Figure 4 This is a structural schematic diagram of the lower housing, LED light board, and heat sink of the positioning block highlighted in this application.

[0034] Figure 5 This is an exploded view of the two-lobed shell in this application.

[0035] Figure 6 yes Figure 5 Enlarged view of point C.

[0036] Figure 7 yes Figure 1 Enlarged view of point A in the middle.

[0037] Figure 8 yes Figure 2 Enlarged view of section B in the middle.

[0038] Figure 9 This is a schematic diagram highlighting the structure within the cavity of the housing 1 in this application.

[0039] Figure 10 This is a schematic diagram of the heat sink and bracket structure of this application.

[0040] Explanation of reference numerals in the attached drawings: 1. Housing; 12. Upper housing; 13. Lower housing; 131. Petal housing; 11. Vent; 2. LED light panel; 21. Perforation; 3. Heat sink fins; 31. Mounting slot; 32. Reinforcing rib; 4. Fan; 5. Heat sink plate; 6. Positioning plate; 61. Positioning hole; 7. Positioning post; 71. Fixing slot; 8. Positioning block; 9. Bracket; 100. PCB board; 110. Starter. Detailed Implementation

[0041] The following combination Figures 1-10 This application will be described in further detail.

[0042] This application discloses a high heat dissipation LED lamp. (Refer to...) Figure 1 and Figure 2 The high heat dissipation LED lamp includes a housing 1 and an LED lamp board 2 detachably connected to the housing 1. Multiple ventilation openings 11 communicating with the inner cavity are provided on the outer wall of the housing 1, and these openings 11 are evenly arranged around the central axis of the housing 1. Multiple heat dissipation fins 3 located within the inner cavity of the housing 1 are provided on the inner wall of the housing 1, and these fins 3 are evenly arranged around the central axis of the housing 1. The heat dissipation fins 3 are used to contact and adhere to the surface of the LED lamp board 2 away from the LED.

[0043] Reference Figure 2 and Figure 3 The housing 1 includes an upper housing 12 and a lower housing 13, both of which are bodies of revolution. The radial dimension of the inner cavity of the lower housing 13 is larger than that of the inner cavity of the upper housing 12. The upper housing 12 and lower housing 13 are arranged vertically, with openings at both ends in the vertical direction for wires to pass through. Both the upper housing 12 and lower housing 13 have ventilation openings 11; the ventilation opening 11 on the upper housing 12 is for air intake, and the ventilation opening 11 on the lower housing 13 is for air exhaust. The upper housing 12 is made of plastic, and the lower housing 13 is made of aluminum. In other embodiments, both the upper housing 12 and lower housing 13 are made of aluminum. In other embodiments, the upper housing 12 and lower housing 13 are integrally formed.

[0044] Reference Figure 3 and Figure 4 Multiple sets of positioning blocks 8 are integrally formed on the upper surface of the lower housing 13, and the positioning blocks 8 are evenly arranged around the central axis of the lower housing 13. The positioning blocks 8 are used to abut against the inner wall of the upper housing 12 and play a positioning role when the upper housing 12 is installed. Multiple slots for screw insertion are opened on the upper surface of the lower housing 13, and the upper housing 12 has a through hole for screws to pass through in the vertical direction. The through hole communicates with the slots, and the upper housing 12 and the lower housing 13 are detachably connected by screws. In other embodiments, the upper housing 12 and the lower housing 13 are connected by snap-fit ​​or adhesive.

[0045] Reference Figure 5 and Figure 6The lower housing 13 includes two detachably connected petal housings 131, which are fastened together to form a complete lower housing 13. Positioning plates 6 and positioning posts 7 are integrally formed on the two ends of each petal housing 131 that are fixedly connected to the other petal housing 131. Positioning plates 6 have vertically extending positioning holes 61 for the insertion of the positioning posts 7, and positioning posts 7 have fixing grooves 71 for screws to be screwed into. When the two petal housings 131 are fastened together, the positioning post 7 on one petal housing 131 is inserted into the positioning hole 61 on the other petal housing 131, thereby initially positioning the two petal housings 131. The two petal housings 131 are fixedly connected by screws.

[0046] In other embodiments, the positioning plate 6 and positioning post 7 may be omitted, and instead, a slot for screws to screw into and a through-hole for screws to pass through may be used instead of the positioning plate 6 and positioning post 7, with the through-hole and slot being interconnected. In other embodiments, the two halves of the housing 131 are connected by snap-fit ​​or adhesive.

[0047] Reference Figure 1 and Figure 7 The LED light board 2 is fixedly connected to the lower housing 13 by screws, and the LED light board 2 is located in the inner cavity of the lower housing 13. The LED is located on the lower surface of the LED light board 2. A through hole 21 is provided on the LED light board 2 in the vertical direction for the screw to pass through.

[0048] Reference Figure 2 and Figure 7 and Figure 8 The heat dissipation fins 3 are integrally formed on the inner wall of the lower housing 13 using a die-casting process. Reinforcing ribs 32 are integrally formed on the heat dissipation fins 3. A vertically extending mounting groove 31 for screws to be screwed into is formed on the lower surface of the reinforcing ribs 32, and the mounting groove 31 communicates with the through hole 21. The LED light board 2 and the heat dissipation fins 3 are detachably connected by screws.

[0049] In other embodiments, the heat dissipation fins 3 may not be integrally formed with the lower housing 13; the heat dissipation fins 3 can simply be fitted and abutted against the inner wall of the lower housing 13. In other embodiments, the LED light panel 2 may simply be fitted and abutted against the heat dissipation fins 3 without being fixedly connected. In other embodiments, the heat dissipation fins 3 may not have reinforcing ribs 32, and the mounting groove 31 may be formed on the lower surface of the heat dissipation fins 3.

[0050] Reference Figure 4A heat sink 5, made of aluminum, is detachably connected to the upper surface of the LED light panel 2 via screws. Multiple radially distributed heat sink fins 3 are integrally formed on the upper surface of the heat sink 5. The heat sink fins 3 on the lower housing 13 are arranged around the heat sink 5. In other embodiments, the heat sink 5 may be omitted. In other embodiments, the heat sink fins 3 may not be provided on the heat sink 5; instead, the heat sink fins on the lower housing 13 extend onto the heat sink 5 and abut against it.

[0051] Reference Figure 9 and Figure 10 A bracket 9 is placed on the upper surface of the heat sink 5. The bracket 9 is made of insulating and heat-resistant material. A PCB board 100 is fixedly mounted on the bracket 9 and is electrically connected to the LED light. A fan 4 is also fixedly connected to the bracket 9 by screws and is electrically connected to the PCB board. The PCB board 100 is equipped with a starter 110 for controlling the fan 4 and the LED light. The bracket 9 is located in the inner cavity of the housing 1.

[0052] The assembly principle of a high heat dissipation LED lamp according to an embodiment of this application is as follows: First, the two shell halves 131 are fastened together and fixedly connected with screws. Then, the upper shell 12 is fixedly connected to the lower shell 13 with screws. Next, the heat sink 5 is fixedly connected to the LED lamp board 2 with screws. The fan 4 and the PCB board are fixedly mounted on the bracket 9. The bracket 9 is placed on the heat sink 5. Finally, the LED lamp board 2 is fixedly connected to the lower shell 13.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high heat dissipation LED lamp, characterized in that: The device includes a housing (1) and an LED light panel (2) detachably connected to the housing (1). The outer wall of the housing (1) is provided with a plurality of ventilation openings (11) communicating with the inner cavity. The inner cavity of the housing (1) is provided with a plurality of heat dissipation fins (3). The heat dissipation fins (3) are in contact with the surface of the LED light panel (2) and the heat dissipation fins (3) are in contact with the inner wall of the housing (1).

2. The high heat dissipation LED lamp according to claim 1, characterized in that: A fan (4) is provided in the inner cavity of the housing (1).

3. The high heat dissipation LED lamp according to claim 1, characterized in that: The housing (1) includes a detachably connected upper housing (12) and a lower housing (13). The upper housing (12) is made of plastic, and the lower housing (13) is made of aluminum. The heat dissipation fins (3) are disposed on the cavity wall of the lower housing (13) and arranged around the central axis of the lower housing (13).

4. The high heat dissipation LED lamp according to claim 1, characterized in that: The LED light panel (2) has a heat sink (5) made of aluminum material detachably connected to the surface away from the LED.

5. A high heat dissipation LED lamp according to claim 4, characterized in that: The surface of the heat sink (5) away from the LED light board (2) is also provided with a plurality of radially arranged heat sink fins (3), and the heat sink fins (3) on the housing (1) are arranged around the heat sink (5).

6. A high heat dissipation LED lamp according to claim 1, characterized in that: The heat dissipation fins (3) have an installation groove (31) on their surface near the LED light board (2). The LED light board (2) has a through hole (21) that communicates with the installation groove (31). The LED light board (2) and the heat dissipation fins (3) are fixedly connected to the installation groove (31) by screws, through hole (21).

7. A high heat dissipation LED lamp according to claim 6, characterized in that: The heat dissipation fins (3) have reinforcing ribs (32) formed on them, and the mounting grooves (31) are formed on the reinforcing ribs (32).

8. A high heat dissipation LED lamp according to claim 3, characterized in that: The lower housing (13) includes two detachably connected flap housings (131), which are fastened together to form a complete lower housing (13).

9. A high heat dissipation LED lamp according to claim 8, characterized in that: Both of the aforementioned petal housings (131) are provided with a positioning plate (6) and a positioning post (7). The positioning plate (6) is provided with a positioning hole (61) for the positioning post (7) to be inserted. The positioning post (7) is provided with a fixing groove (71) for screws to be screwed in. When the two petal housings (131) are fastened together, the positioning post (7) on one of the petal housings (131) is inserted into the positioning hole (61) on the other petal housing (131), and the positioning hole (61) on the petal housing (131) is provided for the positioning post (7) on the other petal housing (131) to be inserted.

10. A high heat dissipation LED lamp according to claim 3, characterized in that: The lower housing (13) has a positioning block (8) on its surface near the upper housing (12), and the positioning block (8) is used to abut against the inner wall of the upper housing (12).

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