In-Vehicle Illuminating Device with Reflective Member
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Solution Overview
Problem
Conventional in-vehicle illuminating devices on pillars emit light rays directly into passengers' sight due to direct light emission through transparent windows, causing discomfort.
Innovation Solution
An in-vehicle illuminating device with a reflective member and light source orientation to prevent direct light emission, using a housing with a light transmission part and filter to emit reflected light to the ceiling, ensuring light is not directly visible to passengers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light rays are emitted directly through transparent windows into the vehicle interior, then illumination intensity is improved, but passengers' sight is directly exposed to light source causing discomfort
Solution Approach 1:
The patent introduces a reflective member as an intermediary between the light source and the transparent window. The light source emits light that reflects off the reflective member before passing through the transparent window, thereby illuminating the vehicle interior while preventing direct exposure of passengers' eyes to the light source. This mediator approach resolves the contradiction by maintaining illumination intensity while eliminating the harmful direct light exposure.
2Use of energy by moving object
If light emission axis is oriented towards transparent windows, then light transmission efficiency is improved, but direct light rays enter passenger sight causing discomfort
Solution Approach 1:
The patent changes the spatial dimension of light emission by introducing a reflective member at an angle between the light source and the transparent window. Instead of direct linear emission towards the window, the light is directed at the reflective member which then redirects it through the window. This dimensional change in the light path allows efficient light transmission while preventing direct exposure to passengers.
3Device complexity
If conventional illuminating devices emit light directly into vehicle interior, then simplicity of device structure is maintained, but light rays come directly into passengers' sight
Solution Approach 1:
The patent adds a reflective member as a simple intermediary component between the light source and the transparent window. This addition is minimal in complexity but effectively prevents direct light exposure to passengers while maintaining the overall simplicity of the device structure. The reflective member can be a simple reflective surface or mirror that redirects light paths without requiring complex mechanisms.
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
Prevents direct light emission into passengers' sight while providing soft and even illumination to the vehicle interior, with adjustable lighting effects through filters.
Implementation Method 1
reflected light generated by reflecting light emitted from the light source on the reflective member
Implementation Method 2
a filter for filtering reflected light emitted to the light transmission part
Implementation Method 3
a light transmission part for transmitting reflected light to the outside of the housing
Data Source
AI summary
An in-vehicle illuminating device capable of preventing light emitted from a light source from coming directly into a passenger's sight. An in-vehicle illuminating device 1 includes a housing 2, a reflective member 18 provided within the housing 2, a light source or LEDs 10 orienting a light axis of light emitted therefrom to the reflective member 18. Reflected light obtained by allowing the reflective member 18 to reflect the light emitted from the LEDs 40 is irradiated to the outside of the housing 2, thus preventing light emitted from the LEDs 40 from coming directly into a passenger's sight.