Vehicle Lighting Fixture With Reflector Extension
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Solution Overview
Problem
Conventional vehicle lighting fixtures with LEDs inefficiently utilize the inner space of the lighting chamber, resulting in incomplete light projection across the outer lens, leading to discomfort and a compromised appearance.
Innovation Solution
A vehicle lighting fixture configuration that includes a housing, outer lens, light source (LED), mounting substrate, reflector, and extension, where the LED, reflector, and extension form an optical system, with the reflector positioned below the substrate and the extension featuring a window hole and annular flange to project light through the entire outer lens, utilizing the inner space for a comprehensive light path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If the conventional configuration with substrate holder, substrate, LED, reflector, and extension is used, then the components can be housed in the lighting chamber, but the inner space of the lighting chamber is not effectively utilized and light cannot be projected from the entire outer lens surface
Solution Approach 1:
The patent introduces a new dimension by adding the extension component that extends in the optical path direction. This extension includes a first reflecting surface that redirects light onto a second reflecting surface, creating a folded optical path that充分利用 the lighting chamber's inner space while enabling light to reach the entire outer lens surface for projection.
2Ease of manufacture
If light is projected only from the lower region of the outer lens, then the optical path can be formed with conventional components, but the appearance deteriorates and observers feel discomfort
Solution Approach 1:
The extension acts as an intermediary component between the reflector and the outer lens. It includes a first reflecting surface that receives light from the LED and directs it to a second reflecting surface, which then projects light onto the entire outer lens surface. This intermediary structure enables uniform light distribution across the lens, improving appearance while maintaining ease of manufacture.
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
This configuration allows for light to be projected through the entire region of the outer lens, enhancing the appearance and functionality of the lighting fixture by effectively utilizing the lighting chamber's space, improving light distribution and aesthetic appeal.
Implementation Method 1
The reflector can be configured to receive the light emitted from the light source (LED) and reflect the light so that the light can pass through the window hole portion and the outer lens to be projected outward.
Implementation Method 2
The flange portion of the extension can be configured to receive part of the light emitted from the light source (LED) and reflect the light to the outer lens.
Implementation Method 3
The outer lens can be configured to reflect part of the light from the flange portion to the upper extension portion
Implementation Method 4
a light source configured to include a light emitting device, such as a light emitting diode (LED)
Data Source
AI summary
A vehicle lighting fixture can effectively utilize an inner space of a lighting chamber defined by a housing and an outer lens for the formation of an optical path, so that the light can be projected through the entire surface region of the outer lens. A reflector can extend forward and obliquely downward and can be arranged below a mounting substrate on which LEDs are mounted. An extension can be arranged in front of an LED substrate holder and the reflector. The extension can have a mirror-finished reflecting rear surface, and include a window hole portion positioned in front of the reflector, a curved portion configured to extend from an upper edge portion of the window hole portion upward and obliquely forward, and an annular flange portion configured to extend from respective outer rim portions of the window hole portion and the curved portion rearward.