LED (light-emitting diode) creative down lamp with efficient heat dissipation partition plate

Abstract

The LED down lamp comprises a lamp tube and a controller fixedly arranged at the upper end of the lamp tube, a lampshade is arranged at the bottom of the lamp tube in a threaded connection mode, an LED light source module is fixedly arranged on the top face in the lamp tube, and the heat dissipation partition plate connected with the interior and the exterior is fixedly arranged on the side wall of the lamp tube. The heat dissipation partition plate comprises a metal base layer which is located on the innermost layer and makes contact with air in an inner cavity of the lamp tube, a plurality of heat dissipation protruding points which are distributed in a matrix mode and protrude towards the outer side are arranged on the surface of the metal base layer in a punch forming mode, and a graphene heat dissipation coating is fixed to the outer surface of the metal base layer. The heat dissipation area is increased through the heat dissipation protruding points of the inner metal base layer, the outer graphene heat dissipation coating is combined, heat in the lamp barrel can be rapidly conducted to the outside, the heat dissipation cavity between the lamp barrel and the controller, the metal heat dissipation plate, the heat dissipation fins and the heat dissipation fan work cooperatively, and the problem of heat accumulation caused by a passive heat dissipation mode of traditional heat dissipation fins is solved.

Description

Technical Field

[0001] This utility model relates to the field of downlight device technology, specifically to an LED cultural and creative downlight with a high-efficiency heat dissipation plate. Background Technology

[0002] Downlights, as a common type of lighting fixture, are widely used in homes, commercial spaces, offices, and many other places. They are popular with users due to their recessed installation, concentrated light, and aesthetically pleasing appearance. LED cultural and creative downlights further incorporate cultural and creative elements, serving a decorative purpose while providing lighting, satisfying people's current pursuit of personalized and artistic lighting. Traditional downlights typically consist of a lamp holder, light source, lampshade, and controller. In terms of heat dissipation, they generally rely solely on the metal material of the lamp holder for natural heat dissipation, with some simply adding some heat dissipation fins to the surface of the lamp holder to increase the heat dissipation area.

[0003] However, with the continuous improvement of LED light source power, traditional downlight heat dissipation methods have revealed many defects and shortcomings. On the one hand, relying solely on the lamp holder and a few heat sink fins results in very limited heat dissipation efficiency, failing to effectively dissipate the large amount of heat generated by the LED light source in a timely manner, leading to excessively high temperatures within the lamp body. Excessive temperatures reduce the luminous efficiency of the LED light source, accelerate light decay, and shorten its lifespan. On the other hand, traditional heat dissipation structures exhibit increasingly prominent heat accumulation problems when dealing with long-term continuous lighting demands, making it difficult to meet the requirements of long-term high-intensity lighting in commercial venues or some cultural and creative display scenarios with stringent light stability requirements, thus hindering the promotion and application of LED downlights in more fields. Utility Model Content

[0004] (I) Technical Issues

[0005] This invention aims to overcome the problem of poor heat dissipation performance of traditional LED downlights and provide an LED cultural and creative downlight with a high-efficiency heat dissipation partition.

[0006] (II) Technical Content

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: an LED creative downlight with a high-efficiency heat dissipation baffle, including a lamp tube and a controller fixedly installed on the upper end of the lamp tube, a lamp cover is threadedly connected to the bottom of the lamp tube, an LED light source module is fixedly installed on the top surface inside the lamp tube, a buckle is installed on the outside of the lamp tube, and a heat dissipation baffle connecting the inside and outside is fixedly installed on the side wall of the lamp tube.

[0008] The heat dissipation baffle is circular and has a multi-layer composite structure. The heat dissipation baffle includes a metal base layer located in the innermost layer that is in contact with the air inside the lamp tube. The surface of the metal base layer is stamped with several heat dissipation bumps that are distributed in a matrix and protrude outwards. A graphene heat dissipation coating is fixed on the outer surface of the metal base layer.

[0009] The controller and the lamp are fixedly connected by multiple spaced vertical plates, forming a heat dissipation chamber. A channel for cables to pass through is provided between the controller and the lamp. Metal heat sinks are fixedly installed at the bottom of the controller and the top surface of the lamp. Several heat dissipation fins are fixedly installed on the outer surface of the metal heat sinks.

[0010] Furthermore, a cooling fan is fixedly installed inside one of the vertical plates, and the airflow direction of the cooling fan is the same as the length direction of the cooling fins.

[0011] Furthermore, a thermally conductive silicone pad is provided between the LED light source module and the top surface inside the lamp tube to fill the gap between them and enhance heat conduction.

[0012] Furthermore, the inner wall of the lamp tube is provided with a reflective layer.

[0013] Furthermore, the metal base layer has a thickness of 0.5-1 mm and is made of copper-aluminum alloy with a copper content of 60%-70%.

[0014] Furthermore, the graphene heat dissipation coating is prepared on a metal substrate by chemical vapor deposition.

[0015] (III) Technical Effects

[0016] Compared with existing technologies, the advantages of this invention are as follows: The heat dissipation baffle adopts a multi-layer composite structure. The heat dissipation protrusions of the inner metal base layer increase the heat dissipation area, and combined with the outer graphene heat dissipation coating, it can quickly conduct heat from inside the lamp tube to the outside, effectively reducing the operating temperature of the LED light source module, delaying light decay, and ensuring stable lighting for a long time. The heat dissipation chamber between the lamp tube and the controller, the metal heat sink, the heat dissipation fins, and the cooling fan work together to form a three-dimensional heat dissipation system, optimizing the heat dissipation path, improving heat dissipation efficiency, and solving the problem of heat accumulation caused by the passive heat dissipation method of traditional heat sink fins. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 1 .

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 2 .

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 3 .

[0020] Figure 4 This is a schematic diagram of the main structure of this utility model.

[0021] Figure 5This is a schematic diagram of the left-side structure of this utility model.

[0022] Figure 6 This is a schematic diagram of the cross-sectional structure of this utility model. Figure 1 .

[0023] Figure 7 This is a schematic diagram of the cross-sectional structure of this utility model. Figure 2 .

[0024] As shown in the figure: 1. Lamp tube; 2. Controller; 3. Lampshade; 4. LED light source module; 5. Heat dissipation plate; 6. Metal base layer; 7. Heat dissipation bumps; 8. Vertical plate; 9. Metal heat dissipation plate; 10. Heat dissipation fins; 11. Cooling fan; 12. Thermal conductive silicone pad; 13. Reflective layer; 14. Graphene heat dissipation coating; 15. Clip; 16. Channel. Detailed Implementation

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "center", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation structure and operation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided with," "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] The present invention will now be described in further detail with reference to the accompanying drawings.

[0028] Combined with appendix Figure 1 To be continued Figure 7 An LED creative downlight with a high-efficiency heat dissipation baffle includes a lamp barrel 1 and a controller 2 fixedly mounted on the upper end of the lamp barrel 1. The inner wall of the lamp barrel 1 is provided with a reflective layer 13. The bottom of the lamp barrel 1 is threadedly connected with a lamp cover 3. An LED light source module 4 is fixedly mounted on the top surface inside the lamp barrel 1. A thermally conductive silicone pad 12 is provided between the LED light source module 4 and the top surface inside the lamp barrel 1 to fill the gap between the two and enhance heat conduction. A buckle 15 is installed on the outside of the lamp barrel 1. A heat dissipation baffle 5 connecting the inside and outside is fixedly mounted on the side wall of the lamp barrel 1.

[0029] The heat dissipation baffle 5 is circular and has a multi-layer composite structure. The heat dissipation baffle 5 includes a metal base layer 6 located in the innermost layer that is in contact with the air inside the lamp tube 1. The surface of the metal base layer 6 is stamped with a number of heat dissipation protrusions 7 arranged in a matrix and protruding outward. A graphene heat dissipation coating 14 is fixed on the outer surface of the metal base layer 6.

[0030] The controller 2 and the lamp tube 1 are fixedly connected by multiple spaced vertical plates 8. The controller 2 and the lamp tube 1 form a heat dissipation chamber. A channel 16 for cables to pass through is provided between the controller 2 and the lamp tube 1. Metal heat sinks 9 are fixedly provided at the bottom of the controller 2 and the upper surface of the lamp tube 1. Several heat dissipation fins 10 are fixedly provided on the outer surface of the metal heat sink 9. A cooling fan 11 is fixedly provided in one of the vertical plates 8. The air blowing direction of the cooling fan 11 is the same as the length direction of the heat dissipation fins 10.

[0031] The metal substrate 6 has a thickness of 0.5-1 mm and is made of copper-aluminum alloy with a copper content of 60%-70%. The graphene heat dissipation coating 14 is prepared on the metal substrate 6 by chemical vapor deposition.

[0032] The working principle of this LED creative downlight with a high-efficiency heat dissipation baffle is as follows: When the LED creative downlight is working, the LED light source module 4 generates heat. First, the heat is quickly transferred to the top surface inside the lamp tube 1 through the thermally conductive silicone pad 12. The heat dissipation baffle 5 on the side wall of the lamp tube 1 plays a key role. Its innermost metal base layer 6 is in direct contact with the air inside the lamp tube 1, and the heat is conducted to the metal base layer 6. The heat dissipation protrusions 7 stamped on the surface greatly increase the contact area with the air, accelerating heat dissipation. At the same time, the graphene heat dissipation coating 14 on the outside of the metal base layer 6 utilizes its excellent thermal conductivity to further efficiently guide the heat to the external environment. Secondly, the controller 2 also generates heat during operation. It is fixedly connected to the lamp tube 1 through spaced vertical plates 8 to form a heat dissipation chamber, where the heat diffuses. The metal heat sink 9 and the heat sink 10 fixed on it increase the heat dissipation area. The cooling fan 11 in one of the vertical plates 8 is activated, and the airflow direction is the same as the length direction of the heat sink 10, which promotes the rapid flow of air, removes the heat on the heat sink 10, accelerates the heat dissipation of the controller 2, and prevents heat accumulation.

[0033] The manufacturing method of an LED creative downlight with a high-efficiency heat dissipation plate according to this utility model is as follows:

[0034] Step 1: Fabrication of heat dissipation partition 5:

[0035] Raw material preparation: Select copper-aluminum alloy plates, accurately control the copper content within the range of 60%-70%, and use professional cutting equipment to process the plates to the predetermined thickness, which is 0.5-1 mm. After processing, use a special cleaning agent to thoroughly clean the plates to remove surface oil, impurities, etc. Then, put the plates into drying equipment and dry them at a suitable temperature and time to ensure that the plates are dry and free of moisture residue.

[0036] Stamping: The processed sheet metal is placed on a high-precision stamping die, and the stamping machine is started. According to the die design, several heat dissipation bumps 7 are formed on the surface of the sheet metal in a matrix distribution and protruding outwards. The heat dissipation bumps 7 are ensured to be regular in shape and evenly distributed to achieve the best heat dissipation effect.

[0037] Coating preparation: A graphene heat dissipation coating 14 is prepared on the surface of a plate with heat dissipation bumps 7 using chemical vapor deposition. The deposition process parameters, such as temperature, pressure, and gas flow rate, are strictly controlled to ensure that the graphene heat dissipation coating 14 is uniformly and densely attached to the surface of the metal substrate 6, thus forming a heat dissipation partition 5.

[0038] Step 2: Fabrication of lamp tube 1 and reflective layer 13:

[0039] Forming of lamp tube 1: Using an extrusion process, the suitable raw materials are extruded into a cylindrical lamp tube body 1. The extruded lamp tube 1 is subjected to dimensional accuracy inspection and adjustment to ensure that it meets the design requirements. Then, the inner wall of the lamp tube 1 is polished using polishing equipment to remove burrs and rough textures, making the inner wall smooth and flat, providing a good foundation for the subsequent adhesion of the reflective layer 13.

[0040] Reflective layer 13 coating: Using vacuum coating method, the polished lamp tube 1 is placed in vacuum coating equipment, a high reflectivity coating material is selected, and under strictly controlled process conditions such as vacuum degree and evaporation rate, a reflective layer 13 is coated on the inner wall of the lamp tube 1 to ensure that the reflective layer 13 is uniform and firm, effectively improving the luminous efficiency of the lamp.

[0041] Step 3: Component Assembly

[0042] Heat dissipation partition 5 installation: The fabricated heat dissipation partition 5 is precisely positioned and fixed to the side wall of the lamp tube 1 using welding or high-strength adhesive to ensure a tight connection, connect the inside and outside of the lamp tube 1, and ensure smooth heat dissipation channel.

[0043] Heat dissipation component assembly: Fix the metal heat sink 9 to the bottom of the controller 2 and the upper end of the lamp tube 1, and ensure the connection is stable by riveting or screw fastening; then, fix several heat dissipation fins 10 to the outer surface of the metal heat sink 9 by welding or integral molding process, so as to ensure that the heat dissipation fins 10 are arranged neatly and evenly spaced, thereby enhancing the heat dissipation effect.

[0044] LED light source module 4 fixing: Attach the thermally conductive silicone pad 12 to the top surface inside the lamp tube 1, ensuring a tight fit without air bubbles. Place the LED light source module 4 stably on top of the thermally conductive silicone pad 12 and fix it with screws or clips to ensure full contact between the LED light source module 4 and the thermally conductive silicone pad 12, which is conducive to heat conduction.

[0045] Controller 2 Assembly: The controller 2 is fixed to the upper end of the lamp tube 1 by multiple spaced vertical plates 8, and the connection is made by welding or screws to ensure structural stability; a cooling fan 11 is fixed in one of the vertical plates 8 used to connect the controller 2 and the lamp tube 1. According to the layout of the heat dissipation fins 10, a suitable vertical plate 8 is selected so that the air blowing direction of the cooling fan 11 is consistent with the length direction of the heat dissipation fins 10, so as to ensure that the airflow effectively removes heat; at the same time, a channel 16 is provided between the controller 2 and the lamp tube 1 for the cable to pass through, which facilitates the connection and wiring of the cable.

[0046] Installation of lampshade 3 and clip 15: Install lampshade 3 at the bottom of lamp tube 1 by means of threaded connection, ensuring thread matching, smooth rotation, and secure installation of lampshade 3; install clip 15 on the outside of lamp tube 1 to facilitate installation and removal of lamp.

[0047] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An LED creative downlight with a high-efficiency heat dissipation plate, comprising a lamp tube (1) and a controller (2) fixedly disposed on the upper end of the lamp tube (1), a lamp cover (3) threadedly connected to the bottom of the lamp tube (1), an LED light source module (4) fixedly disposed on the top surface inside the lamp tube (1), and a buckle (15) installed on the outside of the lamp tube (1), characterized in that: The lamp tube (1) has a heat dissipation baffle (5) fixedly installed on its side wall to connect the inside and outside; The heat dissipation baffle (5) is circular and has a multi-layer composite structure. The heat dissipation baffle (5) includes a metal base layer (6) located in the innermost layer that is in contact with the air inside the lamp tube (1). The surface of the metal base layer (6) is stamped with several heat dissipation protrusions (7) that are distributed in a matrix and protrude outward. The outer surface of the metal base layer (6) is fixed with a graphene heat dissipation coating (14). The controller (2) and the lamp tube (1) are fixedly connected by a plurality of spaced vertical plates (8). The controller (2) and the lamp tube (1) form a heat dissipation chamber. A channel (16) for cables to pass through is provided between the controller (2) and the lamp tube (1). A metal heat sink (9) is fixedly provided at the bottom of the controller (2) and the upper surface of the lamp tube (1). A plurality of heat dissipation fins (10) are fixedly provided on the outer surface of the metal heat sink (9).

2. The LED creative downlight with a high-efficiency heat dissipation plate according to claim 1, characterized in that: One of the vertical plates (8) is fixedly equipped with a cooling fan (11), and the air blowing direction of the cooling fan (11) is the same as the length direction of the cooling fins (10).

3. The LED creative downlight with a high-efficiency heat dissipation plate according to claim 1, characterized in that: A thermally conductive silicone pad (12) is provided between the LED light source module (4) and the inner top surface of the lamp tube (1) to fill the gap between them and enhance heat conduction.

4. The LED creative downlight with a high-efficiency heat dissipation plate according to claim 3, characterized in that: The inner wall of the lamp tube (1) is provided with a reflective layer (13).

5. The LED creative downlight with a high-efficiency heat dissipation plate according to claim 1, characterized in that: The graphene heat dissipation coating (14) is prepared on the metal substrate (6) by chemical vapor deposition.

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