Heat dissipation lamp

Abstract

The utility model relates to the technical field of illumination, in particular to a heat dissipation lamp which comprises a lamp shell, a heat dissipation assembly and a light emitting assembly. The lamp shell is composed of a fan cover, a lampshade and a lamp holder rotationally connected with the lampshade. The heat dissipation assembly comprises a heat dissipation fan and a heat dissipation supporting plate, the two ends of the heat dissipation supporting plate are fixed to the inner wall of the lampshade, the middle of the heat dissipation supporting plate sinks towards the center line of the lampshade to form a concave part, and the heat dissipation fan is located in the fan cover and faces the concave part. The light-emitting assembly comprises a lamp panel and lamp beads, the lamp panel is fixed to the bottom of the concave part, and the lamp beads are distributed on the side, away from the heat dissipation supporting plate, of the lamp panel and face the extending direction of the heat dissipation supporting plate. Supporting and light guiding effects are provided for the light-emitting assembly through the heat dissipation supporting plate, meanwhile, the characteristic that airflow generated by the heat dissipation fan becomes narrow gradually in an airflow channel in the lampshade is utilized, the gas flow speed is increased, and therefore the heat dissipation efficiency is remarkably improved, and the technical effects of efficient heat dissipation, stable structure and excellent heat dissipation performance are achieved.

Description

Technical Field

[0001] This application relates to the field of lighting technology, and in particular to a heat dissipation lamp. Background Technology

[0002] As a common lighting device, lamps are widely used in homes, offices, and public places. With increasing demands for better lighting effects and energy efficiency, lamp designs are constantly being optimized. Particularly in terms of heat dissipation technology, effectively reducing the heat generated by lamps during prolonged operation, extending their lifespan, and ensuring optimal lighting performance have become key research areas in the industry.

[0003] When the internal structure of a lamp is complex and the space is compact, traditional heat dissipation methods are difficult to achieve efficient heat dissipation, which can easily lead to excessively high lamp temperatures, affecting the lifespan and safety. Small-sized bulb lamps on the market mainly rely on aluminum for heat dissipation, but due to size limitations, the heat dissipation area is limited, making it difficult to fully meet the usage requirements. Utility Model Content

[0004] The purpose of this application is to overcome the above-mentioned technical problems and provide a heat dissipation lamp.

[0005] A heat dissipation lamp, comprising:

[0006] The lamp housing includes a fan cover, a lamp cover, and a lamp head, wherein the fan cover is fixed at one end of the lamp cover and the lamp head is rotatably connected to the lamp head at the other end.

[0007] A heat dissipation assembly includes a cooling fan and a heat dissipation support plate. The heat dissipation support plate is located inside the lampshade, with both ends fixed to the inner wall of the lampshade, and its middle portion recessed towards the centerline of the lampshade to form a concave portion. The cooling fan is located inside the fan cover, situated on one side of the heat dissipation support plate and facing the concave portion.

[0008] The light-emitting component includes a lamp board and LED beads. The lamp board is fixed to the bottom of the recess, and the LED beads are arranged in an array on the side of the lamp board away from the heat dissipation support plate, with the LED beads facing the extension direction of the heat dissipation support plate.

[0009] By adopting the above solution, the heat dissipation support plate plays a supporting role for the light-emitting component. The heat dissipation support plate is in direct contact with the lamp panel, so it can directly dissipate heat from the lamp panel. The cooling fan is set on the side of the heat dissipation support plate. Since the heat dissipation support plate is concave towards the center line of the lamp cover, the airflow channel of the air blown by the cooling fan gradually narrows as it flows through the lamp cover. The air velocity increases as it flows through the heat dissipation support plate, thus more effectively dissipating heat from the heat dissipation support plate.

[0010] In one embodiment, a temperature control switch is provided on the side of the heat dissipation support plate away from the lamp plate. When the temperature of the heat dissipation support plate is too high, the temperature control switch controls the heat dissipation lamp to cut off the power.

[0011] By adopting the above solution, the temperature control switch is placed on the side of the heat dissipation support plate away from the lamp board, allowing the temperature control switch to more intuitively sense the temperature of the lamp board and the lamp beads.

[0012] In one embodiment, the heat dissipation support plate includes a first mounting ring and a second mounting ring at both ends. The first mounting ring and the second mounting ring are located on both sides of the recess and both mate with the inner wall surface of the lamp cover. The first mounting ring is fixed to the fan cover, and the second mounting ring is fixed to the lamp head.

[0013] By adopting the above solution, a stable connection between the lamp cover, fan cover, and lamp head is achieved through the installation ring. At the same time, the first and second installation rings support the heat dissipation support plate, preventing the heat dissipation support plate from shaking inside the lamp cover and causing unstable illumination direction of the lamp beads.

[0014] In one embodiment, heat dissipation support plate has heat dissipation fins distributed on the side opposite to the light-emitting component. The heat dissipation fins extend in the direction of the second mounting ring and are fixed to the inner wall surface of the second mounting ring.

[0015] By adopting the above solution, since the second mounting ring is closer to the mounting part of the lamp, the second mounting ring bears greater pressure. The heat dissipation fins support the second mounting ring. At the same time, the airflow is not obstructed by the heat dissipation fins when it is squeezed by the concave part. The compressed airflow can flow through the heat dissipation fins at a faster speed, thereby achieving a good heat dissipation effect.

[0016] In one embodiment, the top surface of the heat dissipation fins is provided with a cable clip, the cable clip having an R-shaped cross-section and its surface being in contact with the inner wall of the lampshade.

[0017] By adopting the above solution, since the wiring inside the lamp is too messy and will affect the air circulation, the wiring clamp is set to avoid the wiring inside the lamp being too messy. At the same time, the wiring clamp is in contact with the inner wall of the lampshade, which can act as an elastic element and buffer the lamp.

[0018] In one embodiment, the heat dissipation lamp further includes a rotating assembly located between the second mounting ring and the lamp head. The rotating assembly includes a connector and a rotating disk. The connector includes a head and a rod, both of which are cylindrical, with the diameter of the head being larger than that of the rod. The rotating disk is sleeved on the rod, and the head is embedded in the rotating disk. The rotating disk is fixed to the inner wall surface of the lamp head. The second mounting ring includes a connector hole that mates with the rod.

[0019] By adopting the above scheme, the direction of light from the lamp can be adjusted when the rotating disc rotates around the axis of the rod.

[0020] In one embodiment, the rotating assembly further includes a limiting member, the outer peripheral surface of the rod is provided with a limiting groove, the inner wall surface of the insertion hole is provided with a limiting hole, and the limiting member passes through the limiting hole and cooperates with the limiting groove.

[0021] By adopting the above scheme, the connector and the limiting groove cooperate to achieve axial limiting of the connector, so that the connector will not detach from the connector hole.

[0022] In one embodiment, the rotating assembly further includes a damping disk, which is sleeved on the outer peripheral surface of the rod and sandwiched between the second mounting ring and the rotating disk.

[0023] By adopting the above scheme, the rotating disk is damped during rotation, so the lamp is damped when adjusting the direction of light, thus preventing the direction of light from deflecting under the action of its own weight.

[0024] In one embodiment, the damping disc has a T-shaped cross-section and includes a connecting portion and a damping portion. The connecting portion is cylindrical and sleeved on the outer peripheral surface of the rod. The damping portion is disc-shaped and sleeved on the outer peripheral surface of the connecting portion. The damping portion extends in a direction away from the connecting portion.

[0025] By adopting the above solution, the connecting part supports the damping part, preventing the damping part from deflecting during rotation and enhancing the stability of the damping disc connection.

[0026] In one embodiment, the surface of the damping part is provided with a limiting protrusion, which is sandwiched between adjacent heat dissipation fins. The heat dissipation fins located in the second mounting ring are provided with a clearance notch. The rotating disk is provided with a stop bolt that cooperates with the clearance notch. When the stop bolt cooperates with the clearance notch, the rotating disk can rotate. When the stop bolt does not cooperate with the clearance notch, the stop bolt is stopped by the heat dissipation fins.

[0027] By adopting the above solution, the limiting protrusion can keep the damping disc in a fixed state, preventing the damping disc from rotating with the rotating disc and ensuring that the damping disc can play a damping role. Through the cooperation of the stop bolt and the avoidance notch, the rotation angle of the lamp cannot exceed 360°, preventing the lamp from rotating too much and causing damage to the internal structure.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. The heat dissipation support plate supports the light-emitting components and guides the light of the LED chips. The heat dissipation support plate is in direct contact with the lamp board, thus directly dissipating heat from the lamp board and LED chips. The cooling fan is located on the side of the heat dissipation support plate. Because the heat dissipation support plate is recessed towards the center line of the lamp cover, the airflow channel of the air blown by the cooling fan gradually narrows as it passes through the lamp cover. The air velocity increases as it flows through the heat dissipation support plate, thus more effectively dissipating heat from the heat dissipation support plate.

[0030] 2. The mounting rings ensure a stable connection between the lampshade, fan cover, and lamp head. The first and second mounting rings also support the heat dissipation support plate, preventing it from wobbling inside the lampshade and causing unstable illumination direction of the LEDs. Because the second mounting ring is closer to the lamp's mounting point, it bears greater pressure. The heat dissipation fins support the second mounting ring, and the airflow is not obstructed by the heat dissipation fins when compressed by the concave portion. The compressed airflow can then pass through the heat dissipation fins at a faster speed, resulting in excellent heat dissipation.

[0031] 3. The rotating component allows for adjustment of the lamp's illumination direction. The connector and limiting groove work together to axially limit the connector, preventing it from detaching from the insertion hole. The damping disc provides damping during rotation, thus preventing the lamp from deflecting under its own weight. The connecting part supports the damping part, preventing it from deflecting during rotation and enhancing the stability of the damping disc connection. The limiting protrusion keeps the damping disc in a fixed position, preventing it from rotating with the disc and ensuring its damping effect. The stop bolt and the clearance notch prevent the lamp's rotation angle from exceeding 360°, preventing damage to the internal structure caused by excessive rotation. Attached Figure Description

[0032] Figure 1 This is a structural schematic diagram of a heat dissipation lamp provided in this application.

[0033] Figure 2 This is an exploded view of a heat dissipation lamp provided in this application.

[0034] Figure 3 yes Figure 2 An enlarged view of region A.

[0035] Figure 4 This is a cross-sectional view of a heat dissipation lamp provided in this application.

[0036] Figure 5 yes Figure 4 An enlarged view of region A.

[0037] Figure 6 This is a schematic diagram of the heat dissipation support plate structure.

[0038] Figure 7 This is an exploded view of the rotating assembly.

[0039] Explanation of reference numerals in the attached drawings: 1. Lamp housing; 11. Fan cover; 12. Lamp cover; 13. Lamp head; 2. Heat dissipation assembly; 21. Heat dissipation fan; 22. Heat dissipation support plate; 221. Recess; 222. First mounting ring; 223. Second mounting ring; 2231. Insertion hole; 2232. Limiting hole; 224. Heat dissipation fins; 2241. Clearance notch; 225. Cable clip; 3. Light-emitting assembly; 31. Lamp board; 32. Lamp bead; 4. Temperature control switch; 5. Rotating assembly; 51. Insertion piece; 511. Head; 512. Rod; 5121. Limiting groove; 52. Rotating disk; 521. Stop bolt; 53. Limiting component; 54. Damping disk; 541. Connecting part; 542. Damping part; 5421. Limiting protrusion. Detailed Implementation

[0040] Therefore, it is necessary to provide a heat dissipation lamp that can effectively dissipate heat.

[0041] Please see Figure 1-3 , Figure 1 The schematic diagram of a heat dissipation lamp provided in this application includes a lamp housing 1, a heat dissipation component 2, a light-emitting component 3, and a rotating component 5.

[0042] Please refer to the following: Figure 4-5 , Figure 4This is a cross-sectional view of a heat dissipation lamp provided in this application. The lamp housing 1 consists of a fan cover 11, a lamp cover 12, and a lamp head 13. One end of the lamp cover 12 is fixed to the fan cover 11, and the other end is rotatably connected to the lamp head 13 via a rotating assembly 5. The heat dissipation assembly 2 includes a heat dissipation fan 21 and a heat dissipation support plate 22. Both ends of the heat dissipation support plate 22 are fixed to the inner wall of the lamp cover 12, and the middle part is recessed towards the center line of the lamp cover 12 to form a recess 221. The light-emitting assembly 3 includes a lamp plate 31 and lamp beads 32. The lamp plate 31 is fixed to the bottom of the recess 221, and the lamp beads 32 are arranged in an array on the side of the lamp plate 31 away from the heat dissipation support plate 22. The heat dissipation fan 21 is driven by a DC brushless motor and installed inside the fan cover 11. The distance between the heat dissipation fan 21 and the heat dissipation support plate 22 is moderate to ensure that airflow can smoothly enter the interior of the lamp cover 12. As the airflow generated by the cooling fan 21 flows through the heat dissipation support plate 22, the airflow channel gradually narrows due to the restriction effect of the recess 221. According to Bernoulli's principle, the gas velocity increases, thus more effectively carrying away the heat on the heat dissipation support plate 22. The lamp holder 13 can be electrically connected to electrical components to supply power to the lamp.

[0043] Please refer to the following: Figure 6 , Figure 6 This is a schematic diagram of the heat dissipation support plate structure. The heat dissipation support plate 22 is made of a material with excellent thermal conductivity, such as aluminum alloy or copper alloy. In this application, the heat dissipation support plate 22 is die-cast aluminum. A first mounting ring 222 and a second mounting ring 223 are respectively provided at both ends of the recess 221. Both mounting rings are engaged with the inner wall surface of the lamp cover 12 by threads or adhesive. The first mounting ring 222 is connected to the fan cover 11 by threads or screws, and the second mounting ring 223 is connected to the lamp holder 13 by threads or screws. The recess 221 formed by the indentation in the middle of the heat dissipation support plate 22 towards the center line of the lamp cover 12 is parabolic in shape. The recess 221 can also be ellipsoidal, which can effectively guide the airflow to concentrate in the lamp plate 31 area, improving heat dissipation efficiency. At the same time, multiple circular positioning holes are provided at the bottom of the recess 221 for fixing the lamp plate 31.

[0044] The lamp board 31 uses a high thermal conductivity ceramic substrate with moderate size and reasonable thickness. The LED beads 32 are CSP LED beads, small in size and resistant to high temperatures, distributed in a matrix on the surface of the lamp board 31. The heat dissipation support plate 22 can also use reflective material or have a reflective layer on its surface. Appropriate spacing is maintained between the LED beads 32, with the beads facing the extension direction of the heat dissipation support plate 22, so that the light emitted is evenly distributed after reflection by the heat dissipation support plate 22, achieving a light guiding effect. A temperature control switch 4 is added to the side of the heat dissipation support plate 22 away from the lamp board 31. The temperature control switch 4 uses a bimetallic strip structure and is installed on the heat dissipation support plate 22 near the second mounting ring 223. When the temperature of the heat dissipation support plate 22 exceeds a set threshold, the bimetallic strip deforms due to heat, triggering the switch to cut off the power to the lamp and preventing safety hazards caused by overheating.

[0045] The temperature control switch 4 comprises three parts: a temperature sensing element, contacts, and a housing. The temperature sensing element is a bimetallic strip, made of two metals with different coefficients of thermal expansion laminated together. When the temperature rises, the bimetallic strip bends and deforms, pushing the contacts to open. The housing is made of high-temperature resistant insulating material to ensure electrical safety. The temperature control switch 4 is fixed to the surface of the heat dissipation support plate 22 with screws, and its sensing end is in direct contact with the heat dissipation support plate 22, enabling real-time monitoring of temperature changes.

[0046] A heat dissipation fin 224 is added to the side of the heat dissipation support plate 22 away from the light-emitting component 3, and a cable clip 225 is provided on the top surface of the heat dissipation fin 224. The heat dissipation fin 224 is made of aluminum alloy, with moderate thickness and height, and is evenly distributed along the surface of the heat dissipation support plate 22. There is a gap between each heat dissipation fin 224 to ensure smooth airflow. The heat dissipation fin 224 extends towards the second mounting ring 223 and contacts the inner wall of the second mounting ring 223. The heat dissipation fin 224 and the second mounting ring 223 can be made of the same material and welded together to form an integral structure, thereby strengthening the structure of the second mounting ring 223. The airflow blown by the cooling fan 21 flows through the recess 221 from the first mounting ring 222. When the airflow is squeezed by the recess 221, it is not obstructed by the heat dissipation fin 224. The compressed airflow can flow through the heat dissipation fin 224 at a faster speed, thereby achieving a good heat dissipation effect.

[0047] The cable clip 225 is made of elastic plastic with an R-shaped cross-section, comprising a fixing part and a clamping part. The fixing part is glued to the top surface of the heat sink fins 224. The clamping part is circular, with its outer circumference in contact with the inner wall of the lampshade 12. It is used to clamp the internal wires of the lamp and also serves as a shock absorber, enhancing the stability of the lamp structure. The surface of the cable clip 225 is in contact with the inner wall of the lampshade 12, serving both as cable management and as a buffer to protect the lamp.

[0048] Please refer to the following: Figure 7 , Figure 7 The exploded view shows the rotating assembly 5, located between the second mounting ring 223 and the lamp holder 13. The rotating assembly 5 includes a connector 51, a rotating disk 52, a limiting member 53, and a damping disk 54. The connector 51 consists of a head 511 and a rod 512, with the head 511 having a larger diameter than the rod 512; both are cylindrical. The rotating disk 52 is fitted onto the outer circumference of the rod 512, and the head 511 is embedded in the inner cavity of the rotating disk 52. The rotating disk 52 is fixed to the inner wall of the lamp holder 13 by screws. The second mounting ring 223 is provided with a plug hole 2231 that mates with the rod 512. The outer circumferential surface of the rod 512 is provided with a limiting groove 5121. The limiting member 53 is a pin or a nut screw, which passes between the limiting hole 2232 on the inner wall of the plug hole 2231 and the limiting groove 5121 on the outer circumferential surface of the rod 512, thereby achieving axial limiting of the plug member 51.

[0049] The damping disc 54 is made of rubber and has a T-shaped cross-section, comprising a connecting part 541 and a damping part 542. The connecting part 541 is cylindrical and fits onto the outer circumference of the rod part 512; the damping part 542 is disc-shaped and fits onto the outer circumference of the connecting part 541, sandwiched between the second mounting ring 223 and the rotating disc 52. The damping part 542 extends away from the axis of the connecting part 541. The connecting part 541 supports the damping part 542, preventing the damping part 542 from deflecting during rotation and enhancing the stability of the damping disc 54 connection. The surface of the damping part 542 is provided with a limiting protrusion 5421, which is sandwiched between two adjacent heat dissipation fins 224. The heat dissipation fins 224 located on the second mounting ring 223 are provided with a clearance notch 2241, and the rotating disc 52 is provided with a stop bolt 521 that mates with the clearance notch 2241. When the user rotates the lamp, the rotating disk 52 can rotate smoothly when the stop bolt 521 is engaged with the clearance notch 2241. When the stop bolt 521 passes through a path without the clearance notch 2241, the stop bolt 521 is blocked by the heat dissipation fins 224, and the rotating disk 52 cannot continue to rotate, thus preventing the lamp from rotating too much and causing damage to the internal structure.

[0050] The working principle of this application is as follows: the cooling fan 21 and the cooling support plate 22 simultaneously dissipate heat from the lamp board 31 and the lamp beads 32. The cooling support plate 22 is in direct contact with the lamp board 31, thereby directly dissipating heat from the lamp board 31 and the lamp beads 32. The cooling fan 21 is set on the side of the cooling support plate 22. Since the cooling support plate 22 is recessed towards the center line of the lamp cover 12, the airflow channel of the air blown by the cooling fan 21 through the lamp cover 12 gradually narrows. The airflow velocity increases during the flow through the cooling support plate 22, thereby more effectively dissipating heat from the cooling support plate 22. Through the setting of the rotating component 5, the lamp cover 12 can rotate relative to the lamp head 13 within a certain angle range, thereby controlling the illumination direction of the lamp.

[0051] 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 heat dissipation lamp, characterized in that, include: The lamp housing (1) includes a fan cover (11), a lamp cover (12) and a lamp head (13). One end of the lamp cover (12) is fixed to the fan cover (11), and the other end is rotatably connected to the lamp head (13). The heat dissipation assembly (2) includes a heat dissipation fan (21) and a heat dissipation support plate (22). The heat dissipation support plate (22) is located inside the lampshade (12). Both ends of the heat dissipation support plate (22) are fixed to the inner wall surface of the lampshade (12), and the middle part is recessed towards the center line of the lampshade (12) to form a recess (221). The heat dissipation fan (21) is located inside the fan cover (11). The heat dissipation fan (21) is located on one side of the heat dissipation support plate (22) and faces the recess (221). The light-emitting component (3) includes a lamp plate (31) and lamp beads (32). The lamp plate (31) is fixed at the bottom of the recess (221). The lamp beads (32) are arranged in an array on the side of the lamp plate (31) away from the heat dissipation support plate (22). The lamp beads (32) face the extension direction of the heat dissipation support plate (22).

2. A heat dissipation lamp according to claim 1, characterized in that: A temperature control switch (4) is provided on the side of the heat dissipation support plate (22) away from the lamp plate (31). When the temperature of the heat dissipation support plate (22) is too high, the temperature control switch (4) controls the heat dissipation lamp to cut off the power.

3. A heat dissipation lamp according to claim 1, characterized in that: The heat dissipation support plate (22) includes a first mounting ring (222) and a second mounting ring (223) at both ends. The first mounting ring (222) and the second mounting ring (223) are located on both sides of the recess (221) and both fit with the inner wall surface of the lamp cover (12). The first mounting ring (222) is fixed to the fan cover (11), and the second mounting ring (223) is fixed to the lamp head (13).

4. A heat dissipation lamp according to claim 3, characterized in that: The heat dissipation support plate (22) has heat dissipation fins (224) distributed on the side away from the light-emitting component (3). The heat dissipation fins (224) extend in the direction of the second mounting ring (223) and are fixed to the inner wall surface of the second mounting ring (223).

5. A heat dissipation lamp according to claim 4, characterized in that: The top surface of the heat dissipation fins (224) is provided with a cable clip (225), the cross-section of the cable clip (225) is R-shaped and the surface is in contact with the inner wall of the lampshade (12).

6. A heat dissipation lamp according to claim 4, characterized in that: The heat dissipation lamp also includes a rotating assembly (5), which is located between the second mounting ring (223) and the lamp head (13). The rotating assembly (5) includes a plug (51) and a rotating disk (52). The plug (51) includes a head (511) and a rod (512). Both the head (511) and the rod (512) are cylindrical, and the diameter of the head (511) is larger than that of the rod (512). The rotating disk (52) is sleeved on the rod (512), and the head (511) is embedded in the rotating disk (52). The rotating disk (52) is fixed to the inner wall of the lamp head (13). The second mounting ring (223) includes a plug hole (2231) that mates with the rod (512).

7. A heat dissipation lamp according to claim 6, characterized in that: The rotating assembly (5) also includes a limiting member (53). The outer peripheral surface of the rod (512) is provided with a limiting groove (5121), and the inner wall surface of the insertion hole (2231) is provided with a limiting hole (2232). The limiting member (53) passes through the limiting hole (2232) and cooperates with the limiting groove (5121).

8. A heat dissipation lamp according to claim 6, characterized in that: The rotating assembly (5) further includes a damping disk (54), which is sleeved on the outer peripheral surface of the rod (512) and sandwiched between the second mounting ring (223) and the rotating disk (52).

9. A heat dissipation lamp according to claim 8, characterized in that: The damping disc (54) has a T-shaped cross section. The damping disc (54) includes a connecting part (541) and a damping part (542). The connecting part (541) is cylindrical and is sleeved on the outer peripheral surface of the rod part (512). The damping part (542) is disc-shaped and is sleeved on the outer peripheral surface of the connecting part (541). The damping part (542) extends in a direction away from the connecting part (541).

10. A heat dissipation lamp according to claim 9, characterized in that: The damping part (542) has a limiting protrusion (5421) on its surface. The limiting protrusion (5421) is sandwiched between adjacent heat dissipation fins (224). The heat dissipation fins (224) located in the second mounting ring (223) have a clearance notch (2241). The rotating disk (52) has a stop bolt (521) that cooperates with the clearance notch (2241). When the stop bolt (521) cooperates with the clearance notch (2241), the rotating disk (52) can rotate. When the stop bolt (521) does not cooperate with the clearance notch (2241), the stop bolt (521) is stopped by the heat dissipation fins (224).

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