Vehicle Lamp Fitting with Inclined Projection Lens and Light Shielding Plate
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Solution Overview
Problem
Existing rendering lamps cause discomfort to surroundings due to the projection lens appearing to emit light when turned on, and their mounting on vehicles is complicated by the need for an oblique downward structure.
Innovation Solution
A rendering lamp design with a light shielding plate and projection lens inclined downward, featuring a plate-shaped portion on the projection lens to prevent light emission and a condenser lens to efficiently direct light, allowing easy mounting and formation of desired light distribution patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the projection lens is disposed in a state inclined downward with respect to the front direction of the lamp, then the rendering light distribution pattern can be formed on the road surface, but the projection lens appears to be emitting light causing discomfort to the surroundings
Solution Approach 1:
The patent extracts the harmful visual element (the projection lens appearing to emit light) from the system by using a light shielding plate with a specific opening configuration. The light shielding plate blocks the view of the projection lens from the front direction while allowing light to pass through to form the rendering pattern on the road surface, thus removing the source of discomfort without affecting the lens's functional positioning.
Solution Approach 2:
The light shielding plate acts as an intermediary element between the projection lens and the surrounding environment. It mediates the conflict by selectively blocking light in certain directions (preventing the lens from appearing to emit light) while allowing light transmission in other directions (maintaining the rendering function on the road surface).
2Use of energy by moving object
If a condenser lens is disposed between the light emitting element and the light shielding plate, then the emission light can be efficiently incident on the projection lens, but the mounting structure becomes more complicated
Solution Approach 1:
The light shielding plate is designed to serve multiple functions simultaneously: it shields the projection lens from direct view (preventing discomfort), defines the opening configuration for light transmission, and works in conjunction with the condenser lens to guide light efficiently. By making the light shielding plate multi-functional, the patent reduces the need for additional separate components, thereby simplifying the overall mounting structure while maintaining light efficiency.
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
The design effectively prevents the projection lens from appearing to emit light, reducing discomfort and enabling easy mounting on vehicles while efficiently forming clear and bright light distribution patterns on the road surface.
Implementation Method 1
a condenser lens configured to condense the emission light from the light emitting element toward the opening is disposed between the light emitting element and the light shielding plate
Implementation Method 2
emitting emission light from a light emitting element toward a front of the rendering lamp via a projection lens
Data Source
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AI summary
A rendering lamp fitting (10) is configured to shine emitted light from a light source unit (20) toward the front of the lamp fitting through a first opening portion (40a) to a third opening portion (40c) formed in a light shielding plate (40), and through a projection lens (30). The rendering lamp fitting (10) is disposed in a state in which the projection lens (30) is inclined downward with respect to a forward direction of the lamp fitting. A plate-shaped portion (32) extending in a direction inclined downward with respect to the forward direction of the lamp is formed in an upper region of an outer peripheral edge portion of the projection lens (30).