Plastic-clad aluminum lamp housing

Abstract

The utility model discloses a plastic-clad aluminum lamp housing, which comprises an aluminum cup and a radiator made of plastic, the aluminum cup comprises a cylindrical or truncated cone-shaped inner ring wall, the bottom of the inner ring wall is bent to form a plane or inclined cup bottom, the front end of the radiator is provided with an accommodating cavity matched with the aluminum cup in shape, and the accommodating cavity is provided with an opening. The rear end of the radiator is provided with a connecting column and a plurality of radiating holes communicated with the containing cavity, the connecting column is sleeved with a waterproof decorating part used for shielding the radiating holes, the tail end of the connecting column is provided with a threading through hole communicated with the containing cavity, and the tail end of the connecting column is further sleeved with a conductive lamp holder capable of limiting the waterproof decorating part from disengaging. According to the scheme, the aluminum cup and the radiator are combined, so that the heat dissipation performance of the plastic-clad aluminum lamp shell is improved, the lamp shell is prevented from being burnt out due to local overheating, a plurality of heat dissipation holes are formed in the rear end of the radiator, heat dissipation is further conducted, elements in the lamp shell are better protected, the waterproof part capable of limiting water from flowing into the lamp shell from the heat dissipation holes is connected to the connecting column in a sleeved mode, and the service life of the waterproof part is prolonged. The waterproof piece is connected to the tail end of the connecting column in a sleeving mode through the conductive lamp holder so as to prevent the waterproof piece from disengaging, the waterproof shell can be fixedly connected without machining buckles or other connecting structures, the structural cost of a mold is reduced, and machining and forming are more convenient.

Description

Technical Field

[0001] The utility model relates to the field of lamps, in particular to a plastic-coated aluminum lamp shell. Background Art

[0002] Plastic-coated aluminum lamps are essentially LED lamps. With the development of LED lighting technology, LED lamps are becoming widely used due to their energy-saving and environmentally friendly features. One of the core components of LED lamps is the lamp housing, which not only needs to provide sufficient mechanical strength to protect the internal components but also has to provide good heat dissipation to ensure that the operating temperature of the LED chip remains within a safe range, thereby extending the lamp's lifespan.

[0003] Currently, most LED lamps on the market use metal or plastic as their shell materials. Although traditional all-metal lamp shells have good heat dissipation effects, they are expensive and heavy, which makes installation inconvenient. On the other hand, although pure plastic lamp shells are light and low in cost, they have poor heat dissipation effects due to the low thermal conductivity of plastic, which may affect the lifespan and luminous efficiency of LED lamps. There are also some plastic-coated aluminum lamp shells on the market, but in existing plastic-coated aluminum lamp shells, the structure of the heat sink is often relatively simple and cannot effectively transfer heat from the LED chip to the external environment. Especially in high-power LED applications, this may lead to insufficient heat dissipation and damage to the lamp. As shown in the attached figure Figure 6 As mentioned above, the aluminum blank of the existing plastic-coated aluminum lamp is generally arc-shaped and needs to be processed multiple times through a continuous die to form a curved surface. The continuous die processing has a high material waste rate, many processing steps, and low processing efficiency.

[0004] The present utility model is made based on the above-mentioned situation. Utility Model Content

[0005] The utility model overcomes the shortcomings of the prior art and provides a plastic-coated aluminum lamp housing with good heat dissipation performance.

[0006] The utility model is realized through the following technical solutions:

[0007] A plastic-coated aluminum lamp shell includes an aluminum cup and a radiator made of plastic. The aluminum cup includes a cylindrical or truncated cone-shaped inner ring wall, the bottom of the inner ring wall is bent into a flat or inclined cup bottom, the front end of the radiator is provided with a accommodating cavity adapted to the shape of the aluminum cup, the rear end of the radiator is provided with a connecting column and a plurality of heat dissipation holes connected to the accommodating cavity, the connecting column is sleeved with a waterproof decorative piece for covering the heat dissipation holes, the end of the connecting column is provided with a wire through hole connected to the accommodating cavity, and the end of the connecting column is also sleeved with a conductive lamp holder that can prevent the waterproof decorative piece from falling out.

[0008] In the plastic-coated aluminum lamp housing as described above, the cup wall is provided with a plurality of ridges protruding inwards and used to increase the area of the aluminum cup.

[0009] As described above, a plastic-coated aluminum lamp housing has a first avoidance through hole at a position corresponding to the heat dissipation hole on the bottom of the cup, and a second avoidance through hole at a position corresponding to the threading through hole on the bottom of the cup.

[0010] In the plastic-coated aluminum lamp housing as described above, a heat dissipation cavity is provided between the waterproof decorative component and the radiator.

[0011] In the plastic-coated aluminum lamp housing as described above, the radiator is provided with a plurality of ribs circumferentially, the waterproof decorative component is provided with corresponding limiting slots for inserting the ribs, and a heat dissipation gap is provided between the waterproof decorative component and the radiator to connect the heat dissipation cavity with the outside world.

[0012] In the plastic-coated aluminum lamp housing as described above, the rear end of the radiator is further provided with a waterproof protrusion surrounding the heat dissipation hole.

[0013] In the plastic-coated aluminum lamp housing as described above, the front end of the radiator is further connected to a lampshade, the front end of the radiator is provided with a slot for inserting the end of the lampshade, and the inner side of the slot is provided with a retaining wall for limiting the inflow of glue.

[0014] In the plastic-coated aluminum lamp housing as described above, a first limiting ring is provided on the side wall of the slot, and a second limiting ring is provided on the lampshade to be clamped with the first limiting ring.

[0015] In the plastic-coated aluminum lamp housing as described above, the end of the aluminum cup is provided with a retaining edge extending outward, the radiator is provided with a plastic layer covering the retaining edge, and a thickened layer is provided between the retaining edge and the outer wall of the radiator for limiting cracking of the covering portion.

[0016] In the plastic-coated aluminum lamp housing as described above, the rear end of the radiator is provided with a vent hole for ventilation or threading, and the rear end of the radiator is also provided with a waterproof fence surrounding the vent hole, and the vent hole is communicated with the radiator.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. In this case, the heat dissipation performance of the plastic-coated aluminum lamp housing is improved by combining an aluminum cup with a radiator to prevent the lamp housing from burning due to local overheating. A number of heat dissipation holes are provided at the rear end of the radiator to further dissipate heat, thereby better protecting the components inside the lamp housing. A waterproof part is sleeved on the connecting column to limit the flow of water from the heat dissipation holes into the interior of the lamp housing. The waterproof part is sleeved on the end of the connecting column through a conductive lamp holder to limit its escape, so that the waterproof housing does not need to be fixed with buckles or other connecting structures, which reduces the structural cost of the mold and is more convenient for processing and molding.

[0019] 2. The aluminum cup includes a cylindrical or truncated cone-shaped inner ring wall, the bottom of which is bent into a flat or inclined cup bottom. The aluminum cup can be formed by a single punch die and a single punch, which has high material utilization, few processing steps and high processing efficiency.

[0020] 3. The side wall of the aluminum cup is provided with a plurality of ridges protruding inwards and used to increase the area of the aluminum cup, thereby further improving the heat dissipation effect of the aluminum cup.

[0021] 4. A heat dissipation cavity is provided between the waterproof part and the radiator, and a heat dissipation gap is provided to connect the heat dissipation cavity with the outside world, thereby further improving the heat dissipation effect.

[0022] 5. The rear end of the radiator is also equipped with a waterproof protrusion surrounding the heat dissipation hole. When the waterproof part accidentally enters the water, the waterproof protrusion can also further prevent water from flowing into the radiator and affecting the components.

[0023] 6. A retaining wall is provided on the inner side of the slot to limit the inflow of glue, so that the radiator and the lampshade are more firmly attached. It also solves the problem of the lampshade shrinking and causing it to fall off.

[0024] 7. The radiator is provided with a plastic layer covering the retaining edge. A thickened layer is provided between the retaining edge and the outer wall of the radiator to limit cracking at the covering portion. The thickened layer ensures that the retaining edge has sufficient adhesive layer thickness support, effectively reducing the risk of plastic aging causing cracking of the adhesive layer and other adverse problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0026] Figure 1 It is a structural diagram of the utility model;

[0027] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0028] Figure 3 This is a schematic diagram of the decomposition of the utility model Figure 1 ;

[0029] Figure 4 This is a schematic diagram of the decomposition of the utility model Figure 2 ;

[0030] Figure 5 It is a cross-sectional schematic diagram of the aluminum cup in the utility model;

[0031] Figure 6 It is a structural diagram of an existing plastic-coated aluminum lamp housing; DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the accompanying drawings:

[0033] like Figures 1 to 5The plastic-coated aluminum lamp shell shown includes an aluminum cup 2 and a radiator 1 made of plastic. The aluminum cup 2 includes a cylindrical or truncated cone-shaped inner ring wall 20, the bottom of the inner ring wall 20 is bent into a flat or inclined cup bottom 200, the front end of the radiator 1 is provided with a accommodating cavity 100 adapted to the shape of the aluminum cup 2, the rear end of the radiator 1 is provided with a connecting column 4 and a plurality of heat dissipation holes 12 connected to the accommodating cavity 100, a waterproof decorative part 5 for covering the heat dissipation holes 12 is sleeved on the connecting column 4, and a wire through hole 41 is provided at the end of the connecting column 4 that is conductive to the accommodating cavity 100. The end of the connecting column 4 is also sleeved with a conductive lamp holder 6 that can prevent the waterproof decorative part 5 from falling out.

[0034] In this case, the aluminum cup 2 is combined with the heat sink 1 to improve the heat dissipation performance of the plastic-coated aluminum lamp housing, preventing the lamp housing from burning due to local overheating. The rear end of the heat sink 1 is provided with a plurality of heat dissipation holes 12 to further dissipate heat, thereby better protecting the components inside the lamp housing. The connecting column 4 is sleeved with a waterproof member 5 that can limit water from flowing into the lamp housing through the heat dissipation holes 12. The waterproof member 5 is sleeved on the end of the connecting column 4 through a conductive lamp holder 6 to limit its escape, so that the waterproof member 5 does not need to be processed with a clip or other connecting structure for fixed connection, which reduces the structural cost of the mold and is more convenient for processing and forming. The aluminum cup 2 includes a cylindrical or truncated cone-shaped inner ring wall 20, the bottom of which is bent into a flat or inclined cup bottom 200. The aluminum cup 2 can be formed by a single punch die and a single press, which has high material utilization, few processing steps, and high processing efficiency.

[0035] Specifically, the aluminum cup 2 is integrally formed with the heat sink 1 through a plastic-coated aluminum process. A first clearance hole 22 is provided on the aluminum cup 2 at a position corresponding to the heat dissipation hole 12, and a second clearance hole 23 is provided on the aluminum cup 2 at a position corresponding to the threading hole 41. The connecting post 4 is integrally injection-molded with the heat sink 1. The conductive lamp cap 6 can be partially pressed into the connecting post 4 by mechanical pressure, thereby achieving a fixed connection. Alternatively, the conductive lamp cap 6 can be fixed to the connecting post 4 using glue or other methods.

[0036] In some embodiments, the inner annular wall 20 is provided with a plurality of ridges 21 protruding inwardly and used to increase the area of the aluminum cup 2, thereby further improving the heat dissipation effect of the aluminum cup 2. The ridges 21 are equilateral triangles formed by injection molding, and can also be formed by stamping or other processing methods.

[0037] In some embodiments, a heat dissipation cavity 51 is provided between the waterproof member 5 and the radiator 1. The radiator 1 is provided with a plurality of ribs 13 circumferentially, and the waterproof member 5 is provided with corresponding limiting slots 52 for inserting the ribs 13. A heat dissipation gap 53 is provided between the waterproof member 5 and the radiator 1 to connect the heat dissipation cavity 51 with the outside world, thereby further improving the heat dissipation effect.

[0038] In some embodiments, the rear end of the radiator 1 is further equipped with a waterproof protrusion 14 surrounding the heat dissipation hole 12. If water accidentally enters the waterproof member 5, the waterproof protrusion 14 can further prevent water from entering the radiator 1 and affecting the components. Furthermore, the rear end of the radiator 1 is an inclined surface, which can guide incoming water out of the heat dissipation gap 53 and prevent it from accumulating at the rear end of the radiator 1. Furthermore, the rear end of the radiator 1 is equipped with a vent hole 17 for ventilation or threading. The rear end of the radiator 1 is also equipped with a waterproof fence 171 surrounding the vent hole 17, which is connected to the radiator 1. The vent hole 17 further enhances the heat dissipation effect.

[0039] Furthermore, the end of the aluminum cup 2 is provided with a retaining edge 24 extending outward, and the radiator 1 is provided with a plastic layer covering the aluminum cup 2. A thickened layer 16 is provided between the retaining edge 24 and the outer wall of the radiator 1 for limiting cracking at the covering portion. The thickened layer 16 ensures that the retaining edge 24 has sufficient glue layer thickness support, effectively reducing the risk of plastic aging causing cracking of the glue layer and other adverse problems.

[0040] In some embodiments, a slot 15 is provided at the front end of the radiator 1 for inserting the end of the lampshade 3, and a retaining wall 151 is provided on the inner side of the slot 15 for limiting the inflow of glue, so that the radiator 1 and the lampshade 3 are more firmly adhered, while also solving the problem of the lampshade 3 shrinking and causing the lampshade 3 to fall off.

[0041] Specifically, a first limiting ring 152 is provided on the side wall of the slot 15, and a second limiting ring 31 is provided on the lampshade 3 to be engaged with the first limiting ring 152. The first limiting ring 152 and the side wall of the slot 15 are integrally formed, and the second limiting ring 31 and the lampshade are integrally formed.

Claims

1. A plastic-coated aluminum lamp housing, characterized by: The invention comprises an aluminum cup (2) and a radiator (1) made of plastic, wherein the aluminum cup (2) comprises a cylindrical or truncated cone-shaped inner ring wall (20), the bottom of the inner ring wall (20) being bent into a flat or inclined cup bottom (200), the front end of the radiator (1) being provided with a receiving cavity (100) adapted to the shape of the aluminum cup (2), the rear end of the radiator (1) being provided with a connecting column (4) and a plurality of heat dissipation holes (12) communicating with the receiving cavity (100), the connecting column (4) being sleeved with a waterproof decorative part (5) for shielding the heat dissipation holes (12), the end of the connecting column (4) being provided with a threading hole (41) communicating with the receiving cavity (100), and the end of the connecting column (4) being sleeved with a conductive lamp holder (6) capable of preventing the waterproof decorative part (5) from coming out.

2. The plastic-coated aluminum lamp housing according to claim 1, characterized in that: The inner ring wall (20) is provided with a plurality of ridges (21) protruding inwards and used to increase the area of the aluminum cup (2).

3. The plastic-coated aluminum lamp housing according to claim 2, characterized in that: A first avoidance through hole (22) is provided on the cup bottom at a position corresponding to the heat dissipation hole (12), and a second avoidance through hole (23) is provided on the cup bottom at a position corresponding to the threading through hole (41).

4. The plastic-coated aluminum lamp housing according to claim 1 or 3, characterized in that: A heat dissipation cavity (51) is provided between the waterproof decorative component (5) and the radiator (1).

5. The plastic-coated aluminum lamp housing according to claim 4, characterized in that: The radiator (1) is provided with a plurality of convex ribs (13) in the circumferential direction, the waterproof decorative part (5) is correspondingly provided with a limiting slot (52) for inserting the convex ribs (13), and a heat dissipation gap (53) is provided between the waterproof decorative part (5) and the radiator (1) to connect the heat dissipation cavity (51) with the outside world.

6. The plastic-coated aluminum lamp housing according to claim 5, characterized in that: The rear end of the radiator (1) is further provided with a waterproof protrusion (14) surrounding the heat dissipation hole (12).

7. The plastic-coated aluminum lamp housing according to claim 1, characterized in that: The front end of the radiator (1) is also connected to a lampshade (3). The front end of the radiator (1) is provided with a slot (15) for inserting the end of the lampshade (3). The inner side of the slot (15) is provided with a retaining wall (151) for limiting the inflow of glue.

8. The plastic-coated aluminum lamp housing according to claim 7, characterized in that: A first limiting ring (152) is provided on the side wall of the slot (15), and a second limiting ring (31) is provided on the lampshade (3) and is engaged with the first limiting ring (152).

9. The plastic-coated aluminum lamp housing according to claim 3, characterized in that: The end of the aluminum cup (2) is provided with a retaining edge (24) extending outward, the radiator (1) is provided with a plastic layer covering the retaining edge (24), and a thickening layer (16) for limiting cracking of the covering portion is provided between the retaining edge (24) and the outer wall of the radiator (1).

10. The plastic-coated aluminum lamp housing according to claim 2, characterized in that: The rear end of the radiator (1) is provided with an air vent (17) for ventilation or threading, and the rear end of the radiator (1) is also provided with a waterproof fence (171) surrounding the air vent (17), and the air vent (17) is communicated with the radiator (1).

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