Radiator and LED lamp
By designing the flow port and anti-shell protruding structure in the metal heat sink of the LED lamp radiator, the problem of the metal heat sink contacting the plastic layer when stacking and nesting is solved, the stability and cleanliness of the product are achieved, and the product is avoided.
Patent Information
- Application Number
- CN202421790647.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-07-25
AI Technical Summary
When existing LED radiators are stacked and nested, the metal heat sink easily contacts the plastic layer of another radiator, causing dirty surface friction and causing product defects.
An LED lamp radiator is designed, and its metal heat dissipation cup is provided with a head section, a middle section and an opening section in sequence along the axial direction, and at least two flow ports are distributed in the circumferentially at the position where the middle section and the opening section are connected to the opening section. During injection molding, the plastic enters the inner side of the middle section through these flow ports to form a protective sleeve projection to prevent the metal heat dissipation cup from contacting the plastic layer.
Through the anti-shell projection design, the two nested LED lamp radiators are effectively isolated, avoiding the contact between the metal heat sink cup and the plastic layer, ensuring the stability and appearance of the product, and avoiding the situation of poor product.
Smart Images
Figure CN222773249U_ABST
Abstract
Description
[Technical field]
[0001] The utility model belongs to the technical field of lamps, and in particular relates to an LED lamp. [Background technology]
[0002] like Figure 1 As shown, the existing LED heat sink 100 is a double-layer structure with a metal heat sink 11 and a plastic layer 12 injected on the outside. Figure 2 As shown, after the injection molding of this structure heat sink is completed, the two LED heat sinks need to be stacked and nested, but other protective materials are usually needed to separate the two products. Otherwise, the outer plastic of the product will come into contact with the metal heat sink cup of another product, causing the surface of the product to become dirty due to friction, resulting in product defects. [Contents of the utility model]
[0003] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a heat sink and an LED lamp to solve the problem in the prior art that two LED heat sinks are stacked and nested, which may cause the metal heat sink cup of one heat sink to touch the plastic layer of another heat sink, resulting in product defects.
[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0005] An LED lamp heat sink comprises a metal heat sink cup, wherein a plastic layer formed by injection molding is disposed on the outer side of the metal heat sink cup, wherein a head section, a middle section and a mouth section are sequentially arranged along the axial direction, and the diameters of the metal heat sink cup also increase sequentially, wherein at least two flow ports are distributed at intervals along the circumferential direction at a position where the middle section is connected to the mouth section, and wherein the plastic layer is provided with an anti-sheath protrusion formed by entering the inner side of the middle section through the flow port during injection molding.
[0006] Preferably, the anti-sheathing protrusions are arranged along a complete circumference.
[0007] Preferably, the radial cross-section of the anti-sheath protrusion is arc-shaped or rectangular.
[0008] Preferably, the anti-sheath protrusions are arranged at intervals along the circumferential direction.
[0009] Preferably, the anti-sheath protrusion is in the shape of an elongated strip and its length extends along the axial direction.
[0010] Preferably, the flow opening is a circular hole or a rectangular hole.
[0011] Preferably, the head section has an arc contour shape, and the middle section and the mouth section have a cylindrical contour shape.
[0012] Preferably, the junction between the head section and the middle section forms an oblique transition step; and / or the junction between the mouth section and the middle section forms a vertical step.
[0013] Preferably, the metal heat dissipation cup is made of aluminum.
[0014] In addition, an LED lamp is also provided, comprising the heat sink.
[0015] The utility model adopts the above technical solution and has the following beneficial effects:
[0016] 1. The structural design of the metal heat sink is conducive to heat dissipation, and of course it is also convenient for the heat sink cups to be stacked and nested during packaging. Since at least two flow ports are made on the metal heat sink cup, during injection molding, the plastic on the outside can enter the metal heat sink cup through these flow ports to form an anti-sleeve bulge. When the LED lamp heat sink products with this structure are packaged, when the two products are stacked and nested, the anti-sleeve bulge formed on the outer LED lamp heat sink will push against the plastic layer of the inner LED lamp heat sink, thereby isolating the two nested LED lamp heat sinks, so as to avoid the metal heat sink cup of one heat sink from touching the plastic layer of another heat sink, causing product defects.
[0017] 2. Since the anti-cover protrusion is arranged along the entire circumference, the structure of the two nested LED lamp heat sinks is stable, and it is less likely that the metal heat sink cup of one heat sink will touch the plastic layer of the other heat sink. Moreover, if the radial cross-section of the anti-cover protrusion is an arc, the top of the arc directly contacts the plastic layer of the LED lamp heat sink, which can prevent the anti-cover protrusion from damaging the plastic layer of the other heat sink.
[0018] 3. Since the anti-cover protrusions are arranged at intervals along the circumference, the anti-cover protrusions distributed at multiple points along the circumference can ensure that the structure of the two inner and outer nested LED lamp radiators is stable, and it is not easy for the metal heat dissipation cup of one radiator to touch the plastic layer of the other radiator.
[0019] These features and advantages of the present invention will be disclosed in detail in the following specific implementation manners and drawings.
Brief Description of the Drawings
[0020] The utility model is further described below in conjunction with the accompanying drawings:
[0021] Figure 1 It is a structural schematic diagram of an existing LED lamp radiator;
[0022] Figure 2 A schematic diagram of the structure of stacking existing LED lamp heat sinks;
[0023] Figure 3 This is a top view of the LED lamp heat sink of the first structure in the utility model;
[0024] Figure 4 for Figure 3 Middle AA section view;
[0025] Figure 5 It is a schematic diagram of the structure of a metal heat dissipation cup;
[0026] Figure 6 A schematic diagram of the stacking structure of the LED lamp heat sink of the first structure;
[0027] Figure 7 This is a top view of the LED lamp heat sink of the second structure in the utility model;
[0028] Figure 8 for Figure 7 Middle AA section view;
[0029] Fig. 9 It is a schematic diagram of the structure of a metal heat dissipation cup;
[0030] Fig.10 A schematic diagram of the stacking structure of the LED lamp heat sink of the second structure;
[0031] Figure numerals: radiator 100 , metal heat dissipation cup 11 , head section 111 , middle section 112 , mouth section 113 , flow port 114 , oblique transition step 115 , vertical step 116 , plastic layer 12 , anti-sheath protrusion 13 . [Specific implementation method]
[0032] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.
[0033] Those skilled in the art will appreciate that, in the absence of conflict, the features in the following embodiments and implementations may be combined with each other.
[0034] The terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. For example, the following words indicating orientation or positional relationship, such as "front", "rear", "inside", "outside", etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.
[0035] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0036] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.
[0037] Reference Figures 3 to 6 As shown, this embodiment provides an LED lamp heat sink 100, including a metal heat sink cup 11, the outer side of the metal heat sink cup 11 is provided with a plastic layer 12 formed by injection molding, the metal heat sink cup 11 is provided with a head section 111, a middle section 112 and a mouth section 113 in the axial front-to-back direction, and the diameters are also increased in sequence, and the middle section 112 is provided with at least two flow ports 114 distributed along the circumferential direction at the position where it is connected to the mouth section 113. The plastic layer 12 is provided with an anti-sheathing protrusion 13 formed by entering the inner side of the middle section through the flow port 114 during injection molding.
[0038] The structural design of the above-mentioned metal heat sink cup is conducive to heat dissipation, and of course it is also convenient for the heat sink cups to be stacked and nested during packaging. This is a common metal heat sink cup structure. In addition, since a number of flow ports are made on the metal heat sink cup, during injection molding, the plastic on the outside can enter the metal heat sink cup through these flow ports to form an anti-sleeve protrusion. When the LED lamp heat sink products with this structure are packaged, when the two products are stacked and nested with each other, the anti-sleeve protrusion formed on the outer LED lamp heat sink will push against the plastic layer of the inner LED lamp heat sink, thereby isolating the two nested LED lamp heat sinks inside and outside, so as to avoid the metal heat sink cup of one heat sink from touching the plastic layer of another heat sink, causing product defects.
[0039] As the LED lamp radiator of the first structure, the anti-sleeve protrusion 13 is arranged along a full circle in the circumferential direction. Preferably, the radial cross-section of the anti-sleeve protrusion 13 is arc-shaped or rectangular. Since the anti-sleeve protrusion is arranged along a full circle in the circumferential direction, the structure of the two LED lamp radiators nested inside and outside is stable, and it is less likely to happen that the metal heat dissipation cup of one radiator touches the plastic layer of the other radiator. Moreover, in the case where the radial cross-section of the anti-sleeve protrusion is an arc-shaped, the top of the arc is in direct contact with the plastic layer of the LED lamp radiator, which can prevent the anti-sleeve protrusion from damaging the plastic layer of the other radiator.
[0040] As a common metal heat dissipation cup structure, the head section 111 is in an arc shape, and the middle section 112 and the mouth section 113 are in a cylindrical shape. In addition, an oblique transition step 115 is formed at the junction of the head section 111 and the middle section 112, and a vertical step 116 is formed at the junction of the mouth section 113 and the middle section 112.
[0041] Preferably, the metal heat dissipation cup 11 is made of aluminum, which has good heat dissipation effect on one hand and cost advantage on the other hand, and is therefore also a commonly used heat dissipation cup material.
[0042] When the LED lamp heat sink of this structure is injected, the plastic can enter the inner side of the metal heat sink cup through these flow ports to form a circle of continuous ribs, i.e., anti-cover ridges. The shape of the ribs can be an arc shape as shown in the figure, or other structures. In this solution, the metal heat sink cup does not need to be oriented when it is loaded into the mold during injection molding.
[0043] like Figures 7 to 10 As shown, in the second structure of the LED lamp heat sink, the anti-sheathing protrusions 13 are arranged at intervals along the circumferential direction. Preferably, the anti-sheathing protrusions 13 are long strips and the length extends along the axial direction, and the cross section can be arc-shaped. In this way, the anti-sheathing protrusions distributed at multiple points along the circumference can ensure that the structure of the two LED lamp heat sinks nested inside and outside is stable, and it is not easy for the metal heat sink cup of one heat sink to touch the plastic layer of the other heat sink.
[0044] When the LED lamp heat sink of this structure is injected, the plastic can enter the metal heat sink through these flow ports to form a series of anti-sleeve bulges, which are evenly distributed on the inside of the metal heat sink. During injection molding, this solution needs to open a positioning notch in the metal heat sink to accurately position the flow port and the injection mold.
[0045] It is understandable that the flow port 114 may be a circular hole or a rectangular hole, and of course other structural designs may be made according to the size and shape of the anti-sheath protrusion as required.
[0046] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.
Claims
1. An LED lamp heat sink, comprising a metal heat sink cup, the outer side of the metal heat sink cup is provided with a plastic layer formed by injection molding, the metal heat sink cup is provided with a head section, a middle section and a mouth section in sequence along the axial direction, and the diameters of the metal heat sink cup also increase in sequence, characterized in that: The middle section is provided with at least two flow ports spaced apart along the circumferential direction at the position where it connects with the mouth section, and the plastic layer is provided with an anti-sheathing protrusion formed by entering the inner side of the middle section through the flow ports during injection molding.
2. The LED lamp heat sink according to claim 1, characterized in that: The anti-sheathing protrusions are arranged along a whole circle in the circumferential direction.
3. The LED lamp heat sink according to claim 2, characterized in that: The radial cross section of the anti-sheath protrusion is arc-shaped or rectangular.
4. The LED lamp heat sink according to claim 1, characterized in that: The anti-sheathing protrusions are arranged at intervals along the circumferential direction.
5. The LED lamp heat sink according to claim 4, characterized in that: The anti-sheath protrusion is in the shape of an elongated strip and its length extends along the axial direction.
6. The LED lamp heat sink according to claim 1, characterized in that: The flow opening is a circular hole or a rectangular hole.
7. The LED lamp heat sink according to claim 1, characterized in that: The head section is in the shape of an arc contour, and the middle section and the mouth section are in the shape of a cylinder contour.
8. The LED lamp heat sink according to claim 7, characterized in that: The junction of the head section and the middle section forms an oblique transition step; and / or the junction of the mouth section and the middle section forms a vertical step.
9. The LED lamp heat sink according to claim 1, characterized in that: The metal heat dissipation cup is made of aluminum.
10. An LED lamp, characterized in that: A radiator comprising any one of claims 1 to 9.