Vehicle Lamp Light Guide Layout for Hidden Radar and Heat Isolation
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Solution Overview
Problem
The existing design of vehicle lamps with integrated millimeter wave radars compromises the appearance due to the need for non-transparent design portions to hide the radar, affecting the aesthetic and operational reliability.
Innovation Solution
A vehicle lamp configuration that includes a lamp housing, a lamp cover, an illumination unit, and a light guide member to hide the radar from the outside while emitting light, with the radar positioned outside the lamp chamber to prevent heat interference and improve design aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a non-transparent design portion is provided at the transparent lamp cover to hide the millimeter wave radar, then the radar can be hidden from the outside, but the design of the appearance of the vehicle lamp is lowered
Solution Approach 1:
The patent applies color changes by using a transparent or translucent lamp cover that allows the radar to be hidden without requiring non-transparent design portions. The light guide member emits light that can obscure the radar visually while maintaining the overall aesthetic design of the lamp, thus resolving the contradiction between hiding effectiveness and appearance design.
Solution Approach 2:
The light guide member acts as an intermediary between the radar and the external environment. It allows light to pass through while potentially obscuring the radar's appearance, thereby hiding the radar without compromising the lamp's aesthetic design. This mediator approach resolves the contradiction by providing a third element that satisfies both requirements.
2Device complexity
If the radar is disposed inside the lamp chamber, then the structure is compact, but the operation performance of the radar is adversely affected by heat generated from the illumination unit
Solution Approach 1:
The patent applies segmentation by separating the radar from the illumination unit into different spatial zones. The radar is positioned in a dedicated radar mounting portion that is thermally isolated from the illumination unit, which generates heat. This segmentation allows the structure to remain compact while protecting the radar's operation performance from thermal interference.
Solution Approach 2:
The radar is extracted from the high-heat illumination unit's immediate environment and placed in a separate radar mounting portion with thermal insulation. This extraction removes the harmful thermal influence from the radar's operating environment while maintaining overall structural compactness through integrated design.
3Reliability
If the radar is disposed outside the lamp chamber, then heat interference from the illumination unit is prevented, but additional space is required for radar mounting
Solution Approach 1:
The patent applies the nested doll principle by integrating the radar mounting portion within the overall lamp housing structure. The radar is disposed in a dedicated portion that is nested within the lamp housing, allowing thermal isolation from the illumination unit while minimizing the increase in overall lamp assembly volume. This nested arrangement efficiently uses space without compromising radar performance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the appearance of the vehicle lamp and improves the reliability of the radar by hiding it from external view and isolating it from heat generated by the illumination unit, while maintaining effective radio wave transmission.
Implementation Method 1
a light guide member that is disposed in a manner of facing the radar so as to hide at least a part of the radar from the outside of the vehicle, and is configured to transmit radio waves emitted from the radar
Implementation Method 2
The light guide member is configured to emit light toward the outside of the vehicle
Data Source
AI summary
A left vehicle lamp includes a lamp housing, a lamp cover that covers an opening of the lamp housing, an illumination unit that is disposed inside a lamp chamber formed by the lamp housing and the lamp power bar, a radar) configured to acquire a radar data indicating a surrounding environment of a vehicle by emitting radio waves toward the outside of the vehicle, and a light guide member that is disposed in a manner of facing the radar so as to hide at least a part of the radar from the outside of the vehicle and is configured to transmit radio waves emitted from the radar. The radar is disposed outside the housing. The light guide member is configured to emit light toward the outside of the vehicle.