Heat dissipation structure of plastic-clad aluminum lamp holder

Abstract

The utility model relates to a heat radiation structure of a plastic-clad aluminum lamp holder, which comprises a heat radiator made of plastics, an aluminum cup is arranged in the heat radiator, the aluminum cup comprises a cylindrical or truncated cone-shaped annular cup wall and a bending surface connected with the cup wall, the bending surface is a plane or an inclined plane, a first heat radiation hole is arranged at the bottom of the heat radiator, and a second heat radiation hole is arranged at the bottom of the heat radiator. The radiator is connected with a waterproof decorating part capable of covering the first heat dissipation holes, a heat dissipation cavity is reserved between the radiator and the waterproof decorating part, and second heat dissipation holes are formed in the positions, corresponding to the first heat dissipation holes, of the bent face. The LED lamp has the advantages that due to the arrangement of the first heat dissipation holes and the second heat dissipation holes, heat generated in the working process of the LED lamp can be dissipated into the heat dissipation cavity through the heat dissipation holes, the problem that an LED chip is overheated due to poor heat dissipation is solved, the light-emitting efficiency of the LED lamp is improved, the service life of the LED lamp is prolonged, and the service life of the LED lamp is prolonged. And the LED lamp can still keep a good performance state after long-time operation.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting equipment, and particularly relates to a heat dissipation structure of a plastic-coated aluminum lamp holder. Background Art

[0002] In recent years, LED lamps have been widely used in various lighting occasions due to their characteristics of high efficiency, energy saving and long life. Among them, the plastic-coated aluminum lamp holder, as a base of LED lamps that combines the lightness of plastic and the strength characteristics of aluminum alloy, shows certain advantages in many lighting solutions.

[0003] During the operation of LED lamps, certain heat will be generated. If effective thermal management cannot be carried out, the working temperature of the LED chip will be too high, which will reduce the luminous efficiency and even shorten its service life. However, as Figure 1 shown, in the traditional plastic-coated aluminum lamp holder, the aluminum blank 100 is usually arranged in contact with the inner side wall of the seat body, and its heat dissipation mainly depends on the limited surface area of the aluminum blank 100 on the side wall of the seat body. Therefore, the heat is concentrated inside the bulb, and the heat dissipation efficiency is poor. It is difficult for high-power LED lamps to maintain good performance during long-term operation. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a heat dissipation structure of a plastic-coated aluminum lamp holder, so as to solve the above problems.

[0005] In order to solve the above technical problems, the utility model provides the following technical solution: a heat dissipation structure of a plastic-coated aluminum lamp holder, including a radiator made of plastic, an aluminum cup is arranged inside the radiator, the aluminum cup includes a cylindrical or frustum-shaped annular cup wall, and a bending surface connected to the cup wall, the bending surface is a plane or an inclined surface, a first heat dissipation hole is arranged at the bottom of the radiator, the radiator is connected with a waterproof decorative part capable of covering the first heat dissipation hole, a heat dissipation cavity is left between the radiator and the waterproof decorative part, and a second heat dissipation hole is arranged at the position of the bending surface corresponding to the first heat dissipation hole.

[0006] As a further optimized scheme of the utility model, a heat dissipation gap for communicating the heat dissipation cavity with the outside is arranged between the radiator and the waterproof decorative part.

[0007] As a further optimized scheme of the utility model, the outer wall of the radiator has a plurality of positioning ribs, the waterproof decorative part has positioning grooves corresponding to the positioning ribs, and the heat dissipation gap is arranged between adjacent positioning ribs.

[0008] As a further optimized scheme of the utility model, the bottom of the radiator has an inclined surface capable of guiding water flow to the heat dissipation gap.

[0009] As a further optimization solution of the present utility model, a waterproof flange is arranged around the edge of the first heat dissipation hole along the direction away from the bending surface.

[0010] As a further optimization solution of the present utility model, the end of the waterproof flange is an arc end.

[0011] As a further optimization solution of the present utility model, the radiator is provided with a connecting column, the waterproof decorative part is provided with an extending port for the connecting column to extend out, and the first heat dissipation hole and the extending port are staggered in the vertical direction.

[0012] As a further optimization solution of the present utility model, the connecting column is arranged on the central axis of the radiator, the number of the first heat dissipation holes is at least two, and the first heat dissipation holes are arranged circumferentially around the connecting column.

[0013] As a further optimization solution of the present utility model, the connecting column is frustum-shaped, and the diameter of the connecting column at the end away from the bottom of the radiator is smaller than the diameter of the connecting column at the end close to the bottom of the radiator.

[0014] As a further optimization solution of the present utility model, the aluminum cup is connected to the radiator by a plastic-coated aluminum process.

[0015] Compared with the prior art, the present utility model has the following advantages: Through the arrangement of the first heat dissipation hole and the second heat dissipation hole, the heat generated during the operation of the LED lamp can be dissipated into the heat dissipation cavity through the heat dissipation holes, solving the problem of overheating of the LED chip caused by poor heat dissipation, improving the luminous efficiency of the LED lamp and prolonging its service life, and ensuring that the LED lamp can still maintain a good performance state during long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further details the specific embodiments of the present utility model with reference to the drawings, where:

[0017] Figure 1 is a schematic diagram of the prior art;

[0018] Figure 2 is one of the three-dimensional schematic diagrams of the present utility model;

[0019] Figure 3 is the second three-dimensional schematic diagram of the present utility model;

[0020] Figure 4 is the explosion schematic diagram of the present utility model;

[0021] Figure 5 is the cross-sectional schematic diagram of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following details the embodiments of the present utility model with reference to the drawings.

[0023] As shown Figures 2 to 5 in the figure, the present utility model discloses a heat dissipation structure of a plastic - encapsulated aluminum lamp holder, which includes a radiator 1 made of plastic. An aluminum cup 2 is arranged inside the radiator 1. The aluminum cup 2 includes a cylindrical or frustum - shaped annular cup wall 21 and a bending surface 22 connected to the cup wall 21. The bending surface 22 is a plane or an inclined plane. A first heat dissipation hole 11 is arranged at the bottom of the radiator 1. The radiator 1 is connected with a waterproof decorative part 4 capable of covering the first heat dissipation hole 11. A heat dissipation cavity 5 is left between the radiator 1 and the waterproof decorative part 4. A second heat dissipation hole 23 is arranged at the position of the bending surface 22 corresponding to the first heat dissipation hole 11.

[0024] The radiator 1 is mainly made of plastic and cooperates with the aluminum cup 2 to form a plastic - encapsulated aluminum structure. The aluminum cup 2 has good heat conductivity. By cooperating with the radiator 1, the heat generated by the LED chip is transferred to the surrounding environment through heat conduction. The aluminum cup 2 includes an annular cup wall 21 and a bending surface 22 connected to the cup wall 21, thus forming an installation groove capable of providing an installation position for the LED chip. The aluminum cup 2 includes a cylindrical or frustum - shaped annular cup wall 21 and a bending surface 22 connected to the cup wall 21, which can be formed with fewer steps compared to an arc - shaped aluminum blank, facilitating production. At the same time, the bending surface 22 is a plane or an inclined plane, which is convenient for fitting with the radiator 1 so that the positions of the first heat dissipation hole 11 and the second heat dissipation hole 21 correspond. The first heat dissipation hole 11 is arranged at the bottom of the radiator 1 and is communicated with the heat dissipation cavity 5, thereby improving the heat dissipation efficiency. The waterproof decorative part 4 can play a role in waterproofing and dust - proofing, thus protecting the lamp from environmental factors without affecting heat dissipation. The second heat dissipation hole 21 arranged at the position corresponding to the first heat dissipation hole 11 enables the heat generated by the LED chip to be directly transferred to the heat dissipation cavity 5, further enhancing the heat dissipation effect.

[0025] Through the arrangement of the first heat dissipation hole 11 and the second heat dissipation hole 21, the heat generated during the operation of the LED lamp can be dissipated to the heat dissipation cavity 5 through the heat dissipation holes, solving the problem of overheating of the LED chip caused by poor heat dissipation, improving the luminous efficiency of the LED lamp and prolonging its service life, ensuring that the LED lamp can still maintain a good performance state during long - term operation.

[0026] A heat dissipation gap 6 for communicating the heat dissipation cavity 5 with the outside is arranged between the radiator 1 and the waterproof decorative part 4.

[0027] The heat dissipation gap 6 is arranged between the radiator 1 and the waterproof decorative part 4, allowing air to flow freely, thereby promoting the discharge of heat from the heat dissipation cavity 5 to the external environment.

[0028] The outer wall of the radiator 1 is provided with a plurality of positioning ribs 14, the waterproof decorative member 4 is provided with positioning grooves 42 corresponding to the positioning ribs 14, and the heat dissipation gap 6 is arranged between adjacent positioning ribs 14.

[0029] Through the arrangement of the heat dissipation gap 6 arranged between adjacent positioning ribs, more paths are provided for heat to transfer from the inside to the external environment, preventing heat from accumulating inside the lamp and improving the heat dissipation efficiency.

[0030] The bottom of the radiator 1 has an inclined surface 12 that can guide water flow towards the heat dissipation gap 6.

[0031] When the lamp holder is installed with the opening of the installation groove facing downwards, the inclined surface 12 can guide the liquid to the heat dissipation gap 6 when encountering rainwater or other liquids, and the liquid can flow out of the lamp holder through the heat dissipation gap 6, thus avoiding the influence of liquid accumulation on the normal operation of electrical components and ensuring the reliability and service life of the lamp.

[0032] A waterproof flange 13 is arranged around the edge of the first heat dissipation hole 11 along the direction away from the aluminum cup 2.

[0033] Through the arrangement of the waterproof flange 13, when the inclined surface 12 guides the liquid to the heat dissipation gap 6, the liquid can be prevented from entering the inside of the lamp through the first heat dissipation hole 11.

[0034] The end of the waterproof flange 13 is an arc end.

[0035] The design of the arc end helps to reduce the retention of water droplets on the flange, making the water droplets easier to slide along the smooth surface; at the same time, the arc-shaped design can reduce the mechanical stress concentration caused by sharp edges, thereby improving the structural strength and durability of the flange.

[0036] The radiator 1 is provided with a connecting column 7 communicating with the installation groove 3, the waterproof decorative member 4 is provided with an outlet 41 for the connecting column 7 to extend out, and the first heat dissipation hole 11 and the outlet 41 are staggered in the vertical direction.

[0037] The connecting column 7 can provide a channel for the power cord of the lamp, ensuring that the power cord can be led out from the inside of the lamp and connected to an external power source. The waterproof decorative member 4 is provided with an outlet for the connecting column 7 to extend out. The first heat dissipation hole 11 and the outlet 41 are staggered in the vertical direction, which can prevent the liquid from directly dripping into the inside of the lamp through the first heat dissipation hole 11 and the second heat dissipation hole 23 when flowing in from the outlet 41.

[0038] The connecting column 7 is arranged on the central axis of the radiator 1, the number of the first heat dissipation holes 11 is at least two, and the first heat dissipation holes 11 are arranged circumferentially around the connecting column 7.

[0039] The connecting column 7 is arranged on the central axis of the radiator 1, which can simplify the wiring of the wires and make it easier to manage and maintain. At the same time, the design of the central position is also beneficial to maintaining the balance and stability of the lamp. The design of multiple first heat dissipation holes 11 can provide more heat dissipation paths. While improving the heat dissipation efficiency, it ensures that even if a certain heat dissipation hole is blocked or clogged, the other heat dissipation holes can still continue to function, thus ensuring the overall reliability of the heat dissipation system. The first heat dissipation holes 11 are arranged circumferentially around the connecting column 7, which can ensure that the heat dissipation holes are evenly distributed, facilitating the uniform distribution and discharge of heat.

[0040] The connecting column 7 is frustum-shaped, and the diameter of the connecting column 7 at the end far from the bottom of the radiator 1 is smaller than the diameter of the connecting column 7 at the end close to the bottom of the radiator 1.

[0041] The frustum-shaped connecting column 7 can play a certain guiding role, and when the liquid flows in, it will be easier to flow along the side wall of the connecting column 7, restricting the liquid from directly dripping into the lamp interior through the first heat dissipation holes 11 and the second heat dissipation holes 23.

[0042] The aluminum cup 2 is connected to the radiator 1 by the plastic-coated aluminum process.

[0043] In one embodiment, the radiator 1 wraps the aluminum cup 2, which can minimize the thermal resistance and improve the heat conduction efficiency to the greatest extent.

Claims

1. A heat dissipation structure of a plastic-coated aluminum lamp holder, characterized in that, Comprising a radiator (1) made of plastic, an aluminum cup (2) is provided inside the radiator (1). The aluminum cup (2) includes a cylindrical or frustum-shaped annular cup wall (21), and a bending surface (22) connected to the cup wall (21). The bending surface (22) is a plane or an inclined plane. The bottom of the radiator (1) is provided with a first heat dissipation hole (11). The radiator (1) is connected with a waterproof decorative member (4) capable of covering the first heat dissipation hole (11). A heat dissipation cavity (5) is left between the radiator (1) and the waterproof decorative member (4). A second heat dissipation hole (23) is provided at the position of the bending surface (22) corresponding to the first heat dissipation hole (11).

2. The heat dissipation structure of a plastic-coated aluminum lamp holder according to claim 1, characterized in that, A heat dissipation gap (6) for communicating the heat dissipation cavity (5) with the outside is provided between the radiator (1) and the waterproof decorative member (4).

3. The heat dissipation structure of a plastic-coated aluminum lamp holder according to claim 2, characterized in that A plurality of positioning ribs (14) are provided on the outer wall of the radiator (1). Positioning grooves (42) corresponding to the positioning ribs (14) are provided inside the waterproof decorative member (4). The heat dissipation gap (6) is provided between adjacent positioning ribs (14).

4. The heat dissipation structure of a plastic-coated aluminum lamp holder according to claim 2, characterized in that, The bottom of the radiator (1) has an inclined surface (12) capable of guiding water flow to the heat dissipation gap (6).

5. The heat dissipation structure of a plastic-coated aluminum lamp holder according to claim 3, characterized in that, A waterproof flange (13) is arranged around the edge of the first heat dissipation hole (11) in a direction away from the bending surface (22).

6. The heat dissipation structure of a plastic-coated aluminum lamp holder according to claim 5, characterized in that, The end of the waterproof flange (13) is an arc end.

7. The heat dissipation structure of a plastic-coated aluminum lamp holder according to any one of claims 1-6, characterized in that, The radiator (1) is provided with a connecting column (7). An outlet (41) for the connecting column (7) to extend out is provided on the waterproof decorative member (4). The first heat dissipation hole (11) and the outlet (41) are staggered in the vertical direction.

8. The heat dissipation structure of a plastic-coated aluminum lamp holder according to claim 7, wherein The connecting column (7) is arranged on the central axis of the radiator (1). The number of the first heat dissipation holes (11) is at least two, and the first heat dissipation holes (11) are arranged circumferentially around the connecting column (7).

9. The heat dissipation structure of a plastic-coated aluminum lamp holder according to claim 7, characterized in that, The connecting column (7) is frustum-shaped, and the pipe diameter of the connecting column (7) at the end away from the bottom of the radiator (1) is smaller than the pipe diameter of the connecting column (7) at the end close to the bottom of the radiator (1).

10. The heat dissipation structure of a plastic-encased aluminum lamp holder according to claim 1, characterized in that, The aluminum cup (2) is connected to the radiator (1) by a plastic-coated aluminum process.

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