Motor Vehicle Headlamp Front Housing with Detachable Light-Guiding Element
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Solution Overview
Problem
Existing motor vehicle headlights face limitations in visibility of light-guiding elements due to housing and outer lens restrictions, and require complex external arrangements for lighting and cooling, which complicates maintenance and efficiency.
Innovation Solution
A motor vehicle headlight design featuring a housing with main and additional light sources, a heat sink, and an at least partially transparent outer lens, along with an attachment housing containing a light-guiding element that is detachably connected, allowing for improved visibility and compact integration of lighting, cooling, and collimator optics within the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If light-guiding elements are arranged inside the housing behind the outer lens, then the headlight structure is compact, but the visibility of light functions is restricted
Solution Approach 1:
The headlight is divided into two housing sections: an inner housing containing main light sources and an outer housing containing light-guiding elements. This segmentation allows different light functions to be spatially separated, with the outer housing's light-guiding elements positioned to be visible from the front, thereby improving visibility while maintaining compact integration through the nested housing structure.
2Temperature
If light sources and cooling systems are arranged externally, then cooling efficiency can be optimized, but maintenance complexity increases
Solution Approach 1:
The heat sink is integrated within the inner housing, merging the cooling function with the light source arrangement. The light sources are mounted directly on the heat sink, creating a compact assembly that maintains effective cooling while allowing the entire lighting and cooling system to be serviced as one integrated unit, thereby reducing maintenance complexity.
3Device complexity
If multiple components are integrated within the housing, then device complexity is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The housing is segmented into an inner housing and an outer housing that can be manufactured separately and then assembled. This segmentation allows each housing section to be manufactured with standard precision using conventional processes, while the overall integration is achieved through the assembly of these pre-manufactured sections, thereby reducing the stringency of manufacturing precision requirements.
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 maintenance ease, increases visibility of light functions, and improves lighting efficiency by integrating lighting, cooling, and collimator optics within the headlight housing, reducing external components and complexity.
Implementation Method 1
a heat sink for cooling the light source
Implementation Method 2
a light-guiding element which is designed to guide light emitted by means of the at least one light source
Data Source
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AI summary
The invention relates to a motor vehicle headlamp (90) comprising - a housing (80) in which at least one main light source (70) is arranged; - at least one further light-emitting means (60); - a heat sink (50) for cooling the light-emitting means (60); - an at least partially transparent external lens (40), which closes off the housing (80) from the external environment of the motor vehicle headlamp (90) and has an inner side (41) facing the interior of the housing (80) and an outer side (39) facing the external environment; - a front housing (30), which is arranged in front of the outer side (39) of the external lens (40). Provision is made for a light-guiding element (20) to be arranged in or on the front housing (30), which light-guiding element at least partially fills the interior of the front housing (30) or forms at least part of a wall of the front housing (30) and which is designed to guide light (99) radiated inwards by means of the at least one light-emitting means (60). The invention also relates to a motor vehicle (100) comprising a motor vehicle headlamp (90) according to the invention and a cooling grille (95) according to the invention comprising at least one cooling grille lamination (93).