Plastic plated aluminium heat dissipation cup and LED lamp
A technology of LED lamps and cooling cups, applied in lighting and heating equipment, cooling/heating devices of lighting devices, lighting devices, etc., to reduce costs, ensure molding quality, and maintain beautiful appearance
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Embodiment 1
[0022] Example 1, such as figure 1 and figure 2 The heat dissipation cup shown includes an aluminum cup 11 and a plastic coating layer 12 covering the outer side of the aluminum cup 11. The heat dissipation cup has a three-stage structure along the axial direction, that is, the cone part 102 in the middle is connected to the large mouth end of the cone part. The taper mouth 103 connected to the taper, the lamp cap connecting portion 101 connected to the small mouth end of the taper barrel, the aluminum cup 11 is mainly located inside the taper barrel 102, but both ends also extend a part to the taper mouth 103 and the lamp cap connection 101 . The overmolding layer 12 is provided with an anti-shrinkage structure for reducing the shrinkage rate of the overmolding layer during molding. Since the overmolding layer 12 is relatively thicker at the junction of the conical mouth portion 103 and the conical cylinder portion 102 , shrinkage is more likely to occur, so it is preferab...
Embodiment 2
[0026] Example 2, such as Figure 4 As shown, the difference between this embodiment and Embodiment 1 lies in the different anti-shrinkage structure. Specifically, a plastic ring 122 is provided between the aluminum cup and the plastic-coating layer at the connecting end of the conical mouth portion 103 and the conical barrel portion 102 . During the injection molding process, first put the aluminum cup 11, then put the plastic cup 122 on the outside of the aluminum cup 11, and finally carry out injection molding, so that the aluminum cup 11, the plastic ring 122, and the plastic-coated layer 12 form a whole, so that the plastic-coated layer 12 The thickness of the joint end of the conical mouth portion 103 and the conical barrel portion 102 is significantly reduced, which can ensure that the product shrinks evenly during molding and maintains a beautiful appearance.
Embodiment 3
[0027] Example 3, such as Figure 5 As shown, on the basis of Embodiment 2, if the heat dissipation efficiency is to be further improved, another heat conduction cover plate 17 can be added. The heat conduction cover 17 is stamped and formed by an aluminum plate. The heat conduction cover 17 includes a circular plate-shaped cover body. The transition part is provided with an arc concave structure to enhance the structural strength, and the outer circular surface of the flanging is in contact with the inner annular surface of the heat dissipation cup to realize the positioning of the heat conduction cover. In this way, the heat dissipation cup can be in contact with the heat conduction cover. However, the aluminum base plate is placed on the heat conduction cover plate, which significantly increases the effective heat dissipation area.
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