Lightweight fin type die-casting radiator and vehicle lamp
By optimizing the structural design of the fin die-cast radiator, using metal fins with a width and a narrow upper upper part and a local thickening part, the balance between weight and efficiency of the car light radiator is solved, and the effect of lightweight and cost reduction is achieved.
Patent Information
- Application Number
- CN202422402030.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-29
AI Technical Summary
When existing headlight radiators pursue efficient heat dissipation, they often lead to increased weight, making it difficult to achieve a balance between lightweight and cost reduction.
By optimizing the structural design of the fin die-cast radiator, metal fins with a width and a narrow upper surface are adopted, local metal thickening parts and optimized fin pitches are used, combined with thermal simulation analysis, lightweight and efficient heat dissipation are achieved.
Under the same volume, higher heat dissipation efficiency and lower weight are achieved, while reducing manufacturing costs and being market-competitive.
Smart Images
Figure CN223137678U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicle lamps, and particularly relates to a lightweight finned die-cast radiator and a vehicle lamp. Background Art
[0002] LED vehicle lamps are gradually replacing traditional halogen vehicle lamps. However, a large amount of heat is generated when LEDs work, so a special radiator needs to be equipped. Currently, the vehicle lamp radiators on the market are usually finned die-cast radiators as shown in Figure 1-2 In order to achieve a better heat dissipation effect, large blocks of radiators often need to be stacked, resulting in a relatively large weight. This not only causes the cost of the die-cast radiator to rise rapidly, but also is not conducive to the lightweight of the entire lamp. How to handle the relationship between the weight and heat dissipation efficiency of the radiator has become an urgent problem to be solved. Summary of the Utility Model
[0003] The purpose of the utility model is to optimize the structure of the finned die-cast radiator. By improving the gap between the radiator fins, the shape, size and local thickening of the radiator fins, etc., not only the heat dissipation efficiency is improved, but also the weight of the radiator is greatly reduced, and finally multiple purposes of reducing the manufacturing cost of the radiator and the lightweight of the vehicle lamp are achieved. For this reason, the technical solutions adopted by the utility model are as follows:
[0004] A lightweight finned die-cast radiator includes a metal substrate 1 and metal fins 2. The metal fins 1 are vertically fixed on the upper surface of the metal substrate 2 at equal intervals. A local metal thickening part 3 is also convexly provided on the upper surface of the metal substrate 1. The local metal thickening part 3 is located between the metal fins and faces the LED light source (i.e., the heat source).
[0005] Further, the metal fin 2 has a variable diameter structure with a wider bottom and a narrower top, and the thickness of the root near the metal substrate 1 is greater than the thickness of the outer end. This kind of metal fin with a thinner top and a thicker bottom also helps to achieve better heat dissipation effect with a lighter weight.
[0006] Further, the distance (about 5 - 7 mm) between the roots of adjacent two metal fins is equivalent to 2 - 3.5 times the thickness (about 2 - 2.5 mm) of the outer end of the metal fin.
[0007] Further, the longitudinal width of the metal fin is not greater than the width of the metal substrate, and the height (about 33 - 35 mm) of the metal substrate is equivalent to 12 - 18 times the thickness (about 2 - 2.5 mm) of the outer end of the metal fin.
[0008] Further, the distance (about 6 - 8 mm) from the outside of the local metal thickening part 3 to the lower surface of the metal substrate is equivalent to 2 - 4 times the thickness (about 2 - 2.5 mm) of the outer end of the metal fin.
[0009] Further, positioning posts and mounting holes are provided on the upper and lower surfaces of the metal substrate 1, and the LED light source is fixed on the metal substrate 1 through the positioning posts and the mounting holes.
[0010] The second object of the present utility model is to provide a vehicle lamp equipped with the above lightweight finned die-cast radiator.
[0011] Compared with the existing similar technologies, the progressiveness of the present utility model is reflected in the following aspects: compared with the common finned die-cast radiators on the market, under the condition of the same volume, the improved radiator provided by the present utility model has higher heat dissipation efficiency and smaller weight, and the structure of the finned die-cast radiator is relatively simple and the manufacturing cost is lower, having better market competitiveness. Description of the Drawings
[0012] Figure 1 It is a schematic structural diagram of a common existing finned die-cast radiator.
[0013] Figure 2 is Figure 1 A-A sectional view of
[0014] Figure 3 It is a schematic structural diagram of the improved finned die-cast radiator of the present utility model.
[0015] Figure 4 is Figure 3 B-B sectional view of
[0016] Figure 5 It is a dimension diagram of the improved finned die-cast radiator of the present utility model.
[0017] Figure 6 It is a thermal simulation analysis result diagram of the improved finned die-cast radiator of the present utility model.
[0018] Wherein: 1 - metal substrate, 2 - metal fins, 3 - local metal thickening part. Specific Embodiments
[0019] To enable those of ordinary skill in the art to fully understand the technical solutions and beneficial effects of the present utility model, the following further description is made in conjunction with specific embodiments and the accompanying drawings.
[0020] As Figure 3-4 shown, a lightweight finned die-cast radiator (made of aluminum alloy) mainly includes a metal substrate 1 and a plurality of metal fins 2, and the two are integrally formed by die-casting. Five groups of metal fins 2 are arranged vertically and parallelly on the upper surface of the metal substrate 1. A convex local metal thickening part 3 is provided on the upper surface of the metal substrate 1 opposite to the LED light source (i.e., between the 1st - 3rd metal fins), and the local metal thickening part 3 bridges the surrounding metal fins 2 to enhance the heat dissipation effect.
[0021] This is not enough. In order to achieve lightweight and reduce the weight of the entire radiator while maintaining good heat dissipation performance, we also optimized the shape and arrangement pitch of the metal fins through thermal simulation analysis as shown in Figure 6 . As shown in Figure 4-5 , when viewed from the side, the metal fin 2 is a trapezoid with a wider bottom and a narrower top, and its longitudinal width is equivalent to the width of the metal substrate. The distance between the roots of two adjacent metal fins 2 is 5-7 mm (i.e., b) in Figure 5 ), the thickness and height of the outer end of each metal fin 2 are 2-2.5 mm (i.e., a) in Figure 5 ), 33-35 mm (i.e., d) in Figure 5 ), and the thickness of the local metal thickening part 3 is 6-8 mm (i.e., c) in Figure 5 .
[0022] Analysis and comparison show that for finned die-cast radiators of the same volume, the relevant parameters of the original design ( Figure 1-2 ) and the improved new design of the present utility model ( Figure 3-4 ) are compared as follows:
[0023]
Claims
1. A lightweight finned die-cast radiator, characterized in that: The radiator includes a metal substrate and metal fins. The metal fins are vertically fixed on the metal substrate at a certain distance apart. A local metal thickening portion is convexly provided on the same side of the metal substrate as the metal fins. The local metal thickening portion is located between the metal fins and faces the heat source.
2. The lightweight finned die-cast radiator according to claim 1, wherein: The metal fins have a variable diameter structure with a wider bottom and a narrower top, and the thickness of the root near the metal substrate is greater than that of the outer end portion.
3. The lightweight finned die-cast radiator according to claim 2, characterized in that: The distance between the roots of two adjacent metal fins is equivalent to 2 - 3.5 times the thickness of the outer end portion of the metal fins.
4. The lightweight finned die-cast radiator according to claim 2, wherein: The longitudinal width of the metal fins is not greater than the width of the metal substrate, and the height of the metal fins is equivalent to 12 - 18 times the thickness of the outer end portion of the metal fins.
5. The lightweight finned die-cast radiator according to claim 2, wherein: The distance from the outside of the local metal thickening portion to the side of the metal substrate close to the heat source is equivalent to 2 - 4 times the thickness of the outer end portion of the metal fins.
6. The lightweight finned die-cast radiator according to claim 2, wherein: The distance between the roots of two adjacent metal fins is 5 - 7 mm, the thickness of the outer end portion of the metal fins is 2 - 2.5 mm, the height of the metal fins is 33 - 35 mm, and the distance from the outside of the local metal thickening portion to the side of the metal substrate close to the heat source is 6 - 8 mm.
7. The lightweight finned die-cast radiator according to claim 1, wherein: Positioning posts and mounting holes are provided on the side of the metal substrate opposite to the metal fins, and the heat source is fixed on the metal substrate through the positioning posts and the mounting holes.
8. The lightweight finned die-cast radiator according to claim 1 or 7, characterized in that: The heat source is specifically an LED light source.
9. A vehicle lamp, characterized in that: This vehicle lamp is equipped with the lightweight fin - type die - cast radiator described in any one of claims 1 - 8.