Vehicle Light Source Unit Heat Dissipation via Bending

The light source unit is divided into two functional parts: an injection-molded resin socket for structural support and electrical connection, and a separate metal heat dissipation member for thermal management. This segmentation allows each component to be optimized for its specific function while using appropriate materials, resolving the contradiction between heat dissipation performance and weight.

The light source unit employs a composite structure combining resin (for the socket) and metal (for the heat dissipation member). This composite approach leverages the advantages of both materials: the moldability and cost-effectiveness of resin injection molding, and the superior thermal conductivity of metal, thereby achieving both weight reduction and effective heat dissipation.

By separating the socket and heat dissipation member into distinct components, the socket can be manufactured using injection molding of resin, which is highly automated and cost-effective. The metal heat dissipation member can be separately fabricated using appropriate metal forming processes. This segmentation resolves the contradiction by allowing each component to be manufactured using the most suitable and economical process for its function.

The composite structure enables the socket to be made from injection-molded resin, which offers excellent moldability and cost advantages compared to metal machining or forming. The heat dissipation function is fulfilled by the separate metal member, which can be optimized for thermal performance independently. This resolves the contradiction between heat dissipation performance and ease of manufacture.

The use of a metal heat dissipation member with high thermal conductivity allows for a compact design. The metal material's superior thermal properties enable effective heat dissipation from a smaller volume compared to what would be required with resin alone. This resolves the contradiction by achieving the required heat dissipation performance in a compact form factor through material selection.

The heat dissipation member extends in multiple directions (first direction parallel to the socket surface, and second direction intersecting with the first direction) to maximize heat dissipation surface area within a compact volume. This multi-dimensional configuration allows efficient heat dissipation without increasing the overall unit size, resolving the contradiction between heat dissipation performance and compactness.