High-power COB surface light source with high heat dissipation efficiency

Abstract

The utility model discloses a high -power COB surface light source of high radiating efficiency, it includes the heat dissipation board, the heat dissipation board one end is equipped with COB lamp pearl subassembly, COB lamp pearl subassembly one end is equipped with the mounting apron, is equipped with the lens subassembly with COB lamp pearl subassembly corresponding on the mounting apron, is equipped with the pressing plate subassembly for pressing lens subassembly on the mounting apron, the heat dissipation board other end is equipped with a plurality of heat dissipation fin for the heat dissipation of COB lamp pearl subassembly, the heat dissipation board other end is equipped with the heat dissipation shell, the heat dissipation shell includes the first side plate of being equipped in the heat dissipation board one side wall, the second side plate of being equipped in the heat dissipation board other side wall and the middle plate of being equipped between the first side plate and the second side plate, is equipped with a plurality of evenly arranged heat dissipation fan on the end face of the middle plate facing the heat dissipation fin, and is equipped with the heat dissipation space for the heat dissipation fan and carries out the heat dissipation of guiding between the middle plate and the heat dissipation fin, this high -power COB surface light source of high radiating efficiency, radiating efficiency is high, can guarantee the COB surface light source continuous high -power operation.

Description

Technical Field

[0001] This utility model relates to the technical field of COB surface light sources, and in particular to a high-power COB surface light source with high heat dissipation efficiency. Background Technology

[0002] COB (Chip on Board) surface light sources are an advanced LED packaging technology that directly encapsulates multiple LED chips onto a PCB substrate, forming a high-density, high-brightness surface light emitter. This technology is widely used in lighting applications such as stage lighting, commercial lighting, and outdoor displays, offering advantages such as high luminous efficacy, uniform light distribution, small size, and low cost. With increasing power demands, high-power COB surface light sources have become the mainstream choice, providing higher luminous flux and better color reproduction performance to meet the requirements of complex lighting scenarios.

[0003] However, existing high-power COB surface light sources have significant shortcomings in heat dissipation. During operation, the heat generated by the LED chips in high-power COB surface light sources is difficult to dissipate effectively, leading to heat accumulation and temperature rise, which in turn affects luminous efficacy, color temperature stability, and lifespan.

[0004] Currently, the heat dissipation structure of existing high-power COB surface light sources is generally a passive heat dissipation fin (such as a heat dissipation device for a high-power COB light source LED lamp with patent publication number CN218565374U) or an active simple fan for heat dissipation. Both of these heat dissipation structures have the disadvantage of low heat dissipation efficiency, which can easily lead to the COB surface light source being unable to operate at high power, resulting in low brightness and poor uniformity. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide a high-power COB surface light source with high heat dissipation efficiency. It achieves efficient heat dissipation through COB LED assembly -> heat sink -> heat sink fins -> heat dissipation space -> heat dissipation fan, thereby ensuring that the COB surface light source can operate continuously at high power.

[0006] To achieve the above objectives, this utility model provides a high-power COB surface light source with high heat dissipation efficiency, comprising a heat sink, a COB LED assembly mounted on one end of the heat sink, a mounting cover plate mounted on one end of the COB LED assembly, a lens assembly corresponding to the COB LED assembly mounted on the mounting cover plate, and a pressure plate assembly for pressing the lens assembly on the mounting cover plate. The other end of the heat sink has several heat dissipation fins for cooling the COB LED assembly, and a heat dissipation shell mounted on the other end of the heat sink. The heat dissipation shell includes a first side plate mounted on one side wall of the heat sink, a second side plate mounted on the other side wall of the heat sink, and a middle plate mounted between the first and second side plates. Several evenly arranged cooling fans are mounted on the end face of the middle plate facing the cooling fins. A heat dissipation space is provided between the middle plate and the cooling fins for the cooling fans to conduct heat dissipation.

[0007] Preferably, the middle plate has several air outlets, and the cooling fan is installed on the air outlets.

[0008] Preferably, air inlets are provided on both sides of the heat dissipation space, and the air inlets, heat dissipation space and air outlet are connected in sequence.

[0009] Preferably, the first or second side plate of the heat sink is externally connected to a first power line that is electrically and signal-connected to the cooling fan.

[0010] Preferably, the COB LED assembly includes a PCB board mounted on one end of a heat sink and COB LEDs mounted on the PCB board.

[0011] Preferably, a second power line that is electrically and signal-connected to the PCB board is connected to one side of the mounting cover.

[0012] Preferably, the mounting cover has an opening slot, a first cavity at one end of the opening slot, and a second cavity at one end of the first cavity in sequence. The COB LED assembly is located on the opening slot. The lens assembly includes a primary magnifying collimating lens and a secondary magnifying collimating lens. The primary magnifying collimating lens is placed on the first cavity, and the secondary magnifying collimating lens is placed on the second cavity.

[0013] Preferably, the pressure plate assembly includes a first pressure plate that covers the primary magnifying collimating lens and a second pressure plate that covers the secondary magnifying collimating lens.

[0014] Preferably, one end of the second pressure plate has a flared opening.

[0015] Preferably, both the mounting cover and the pressure plate assembly are circular in shape.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model is equipped with a heat sink plate for dissipating heat from the COB LED chip assembly. Several heat sink fins dissipate heat from the heat sink plate. Air inlets on both sides of the heat dissipation space efficiently dissipate heat from the heat sink fins. A cooling fan exhausts the heat from the heat dissipation space, thereby ensuring that the COB surface light source forms an efficient heat dissipation path: COB LED chip assembly -> heat sink plate -> heat sink fins -> heat dissipation space (air inlet) -> cooling fan (air outlet).

[0018] 2. In summary, the present invention provides a high-power COB surface light source with high heat dissipation efficiency, which can ensure the continuous high-power operation of the COB surface light source, thereby ensuring the high brightness and high uniformity of the COB surface light source. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a high-power COB surface light source with high heat dissipation efficiency provided by an embodiment of this utility model;

[0021] Figure 2 This is an exploded structural diagram of a high-power COB surface light source with high heat dissipation efficiency provided by an embodiment of this utility model from one perspective.

[0022] Figure 3 This is an exploded structural diagram from another perspective of a high-power COB surface light source with high heat dissipation efficiency provided by an embodiment of this utility model.

[0023] Figure 4 This is a front sectional view of the COB LED assembly, mounting cover, lens assembly, and pressure plate assembly provided in an embodiment of this utility model.

[0024] Figure 5 This is an exploded structural diagram of the COB LED assembly, mounting cover, and second pressure plate provided in an embodiment of this utility model.

[0025] The diagram includes:

[0026] 1. Heat sink; 2. COB LED assembly; 21. PCB board; 22. COB LED; 3. Mounting cover; 30. Opening slot; 31. First cavity; 32. Second cavity; 4. Lens assembly; 41. First-stage magnifying collimating lens; 42. Second-stage magnifying collimating lens; 5. Pressure plate assembly; 51. First pressure plate; 52. Second pressure plate; 520. Horn flare; 6. Heat sink shell; 61. First side plate; 62. Second side plate; 63. Middle plate; 65. Air inlet; 66. Heat dissipation fins; 67. Heat dissipation space; 68. Cooling fan; 680. First power cord; 69. Air outlet. Detailed Implementation

[0027] The technical solution of this embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiment is one embodiment of the present invention, and not all embodiments thereof. Based on this embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1 to 5 This utility model provides a high-power COB surface light source with high heat dissipation efficiency, which includes a heat sink 1. A COB LED assembly 2 is mounted on one end of the heat sink 1. A mounting cover plate 3 is mounted on one end of the COB LED assembly 2. A lens assembly 4 corresponding to the COB LED assembly 2 is mounted on the mounting cover plate 3. A pressure plate assembly 5 for pressing the lens assembly 4 is mounted on the mounting cover plate 3. A plurality of heat dissipation fins 66 for dissipating heat from the COB LED assembly 2 are provided on the other end of the heat sink 1. A heat dissipation shell 6 is mounted on the other end of the heat sink 1. The heat dissipation shell 6 includes a first side plate 61 mounted on one side wall of the heat sink 1, a second side plate 62 mounted on the other side wall of the heat sink 1, and a middle plate 63 mounted between the first side plate 61 and the second side plate 62. A plurality of evenly arranged cooling fans 68 are mounted on the end face of the middle plate 63 facing the cooling fins 66. A heat dissipation space 67 for the cooling fans 68 to conduct heat dissipation is provided between the middle plate 63 and the cooling fins 66.

[0029] Several air outlets 69 are provided on the middle plate 63, and the cooling fan 68 is installed on the air outlets 69.

[0030] The first side plate 61 or the second side plate 62 of the heat sink 6 is connected to a first power line 680 that is electrically and signal-connected to the cooling fan 68. The first power line 680 is used to turn on and off several cooling fans 68.

[0031] COB LED assembly 2 includes a PCB board 21 mounted on one end of heat sink 1 and COB LEDs 22 mounted on the PCB board 21.

[0032] A second power line (not shown in the attached drawing) is connected to the outside of the mounting cover plate 3 and is electrically and signal-connected to the PCB board 21.

[0033] The mounting cover plate 3 has an opening slot 30, a first cavity 31 located at one end of the opening slot 30, and a second cavity 32 located at one end of the first cavity 31. The COB LED assembly 2 is located on the opening slot 30. The lens assembly 4 includes a primary magnifying collimating lens 41 and a secondary magnifying collimating lens 42. The primary magnifying collimating lens 41 is placed on the first cavity 31, and the secondary magnifying collimating lens 42 is placed on the second cavity 32. The COB LED assembly 2 achieves large-area surface light source illumination through the primary magnifying collimating lens 41 and the secondary magnifying collimating lens 42.

[0034] The pressure plate assembly 5 includes a first pressure plate 51 that covers the primary magnifying collimating lens 41 and a second pressure plate 52 that covers the secondary magnifying collimating lens 42. The first cavity 31 and the first pressure plate 51 cooperate to ensure that the primary magnifying collimating lens 41 is placed stably, and the second cavity 32 and the second pressure plate 52 cooperate to ensure that the secondary magnifying collimating lens 42 is placed stably.

[0035] The second pressure plate 52 has a flared opening 520 at one end. The function of the flared opening 520 of the second pressure plate 52 is to ensure that while the second pressure plate 52 presses the secondary magnifying collimating lens 42 tightly, the flared opening 520 ensures that the light amplified by the secondary magnifying collimating lens 42 is not blocked by the second pressure plate 52, thus ensuring the brightness of the light amplified by the secondary magnifying collimating lens 42.

[0036] Both the mounting cover plate 3 and the pressure plate assembly 5 are circular in shape. The circular shape of the mounting cover plate 3 and the pressure plate assembly 5 facilitates the machining of the first cavity 31 and the second cavity 32 and ensures the machining accuracy of the first cavity 31 and the second cavity 32.

[0037] An embodiment of this utility model provides a high-power COB surface light source with high heat dissipation efficiency. Its operating principle is as follows: through COB lamp beads 22 -> first-stage collimating magnifying lens -> second-stage collimating magnifying lens, a high-power, high-brightness, and high-uniformity COB surface light source is emitted.

[0038] This invention provides a high-power COB surface light source with high heat dissipation efficiency. Its advantages are as follows: the COB LED beads 22 -> PCB board 21 -> heat sink 1 -> heat sink fins 66 -> air inlets 65 on both sides of the heat dissipation space 67 dissipate heat from several heat sink fins 66 -> heat dissipation fan 68 exhausts heat from the heat dissipation space 67 to the air outlet 69. This efficient heat dissipation path ensures that the COB surface light source continuously emits high-power, high-brightness, and high-uniformity COB surface light.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A high-power COB surface light source with high heat dissipation efficiency, characterized in that, It includes a heat sink (1), one end of which is equipped with a COB LED bead assembly (2), and the other end of which is equipped with a mounting cover plate (3). A lens assembly (4) corresponding to the COB LED bead assembly (2) is mounted on the mounting cover plate (3), and a pressure plate assembly (5) for pressing the lens assembly (4) is mounted on the mounting cover plate (3). The other end of the heat sink (1) is provided with several heat dissipation fins (66) for dissipating heat from the COB LED bead assembly (2). A heat sink (6) is provided, which includes a first side plate (61) installed on one side wall of the heat sink (1), a second side plate (62) installed on the other side wall of the heat sink (1), and a middle plate (63) installed between the first side plate (61) and the second side plate (62). A plurality of evenly arranged cooling fans (68) are installed on one end face of the middle plate (63) facing the heat sink fins (66). A heat dissipation space (67) is provided between the middle plate (63) and the heat sink fins (66) for the cooling fans (68) to conduct heat dissipation.

2. The high-power COB surface light source with high heat dissipation efficiency according to claim 1, characterized in that, The middle plate (63) has several air outlets (69), and the cooling fan (68) is installed on the air outlets (69).

3. A high-power COB surface light source with high heat dissipation efficiency according to claim 2, characterized in that, The heat dissipation space (67) is provided with air inlets (65) on both sides, and the air inlets (65), heat dissipation space (67) and air outlet (69) are connected in sequence.

4. A high-power COB surface light source with high heat dissipation efficiency according to claim 1, characterized in that, The heat sink (6) has a first power line (680) connected to the first side plate (61) or the second side plate (62) for electrical and signal connection with the cooling fan (68).

5. A high-power COB surface light source with high heat dissipation efficiency according to claim 1, characterized in that, The COB LED assembly (2) includes a PCB board (21) mounted on one end of the heat sink (1) and COB LEDs (22) mounted on the PCB board (21).

6. A high-power COB surface light source with high heat dissipation efficiency according to claim 5, characterized in that, The mounting cover (3) has a second power line connected to the PCB board (21) for electrical and signal connection on one side.

7. A high-power COB surface light source with high heat dissipation efficiency according to claim 1, characterized in that, The mounting cover plate (3) is provided with an opening groove (30), a first cavity (31) at one end of the opening groove (30), and a second cavity (32) at one end of the first cavity (31). The COB lamp bead assembly (2) is located on the opening groove (30). The lens assembly (4) includes a first-stage magnifying collimating lens (41) and a second-stage magnifying collimating lens (42). The first-stage magnifying collimating lens (41) is placed on the first cavity (31), and the second-stage magnifying collimating lens (42) is placed on the second cavity (32).

8. A high-power COB surface light source with high heat dissipation efficiency according to claim 7, characterized in that, The pressure plate assembly (5) includes a first pressure plate (51) that covers the primary magnifying collimating lens (41) and a second pressure plate (52) that covers the secondary magnifying collimating lens (42).

9. A high-power COB surface light source with high heat dissipation efficiency according to claim 8, characterized in that, The second pressure plate (52) has a flared opening (520) at one end.

10. A high-power COB surface light source with high heat dissipation efficiency according to claim 1, characterized in that, Both the mounting cover plate (3) and the pressure plate assembly (5) are circular in shape.

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