Seat Backrest Sleep Light Tilting Optical Axis
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Solution Overview
Problem
Current illumination systems in transportation, such as those in airplanes, are inadequate in supporting sleep or awakening effectively, as conventional luminaire positions are far from the user's face, leading to inefficient light distribution and energy usage.
Innovation Solution
An illumination system with a sleep control light that tilts its optical axis downward, transitioning between seated and lying states, allowing the light to pass through the backrest and irradiate the user's facial region, and utilizing different color temperatures for sleep and awakening modes to optimize light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the luminaire is positioned far from the user's face, then the device structure is simpler and easier to install, but the light distribution efficiency is poor and energy consumption increases
Solution Approach 1:
The patent changes the spatial dimension by moving the luminaire from a distant ceiling position to a close proximity position on the seat backrest, fundamentally altering the light distribution geometry and enabling efficient illumination with reduced energy consumption
Solution Approach 2:
The patent applies local quality by positioning the luminaire specifically on the seat backrest to provide targeted illumination to the user's face and upper body, concentrating light energy where needed rather than diffuse illumination from a distant source
2Illumination intensity
If the luminaire is positioned close to the user's face, then light distribution efficiency is improved and energy consumption is reduced, but the device structure becomes more complex and installation becomes more difficult
Solution Approach 1:
The patent merges the luminaire with the seat backrest structure, integrating the lighting function into the existing seat assembly, which simplifies installation by eliminating separate mounting requirements while maintaining close proximity to the user's face for efficient illumination
3Illumination intensity
If the optical axis is tilted downward to pass through the backrest, then the light reaches the user's facial region effectively, but the light may be blocked when the seat is in the first state
Solution Approach 1:
The patent applies dynamics by tilting the optical axis downward at a specific angle, allowing the light beam to dynamically pass through or around the backrest structure when the seat is in the second state, while the seat structure itself dynamically blocks the light when in the first state, achieving automatic light control based on seat position
Data Source
AI summary
An illumination system includes: a seat; a wall; and a sleep control light for controlling sleep, wherein the seat includes a backrest and a seating portion, and makes a transition between a seated state and a lying state when the backrest and the seating portion make a slide movement, the seated state being a state where a minor angle formed between the backrest and the seating portion is a first angle, the lying state being a state where the minor angle is a second angle greater than the first angle, an optical axis of the sleep control light is tilted downward with respect to the horizontal plane, the sleep control light is located behind or above the seat when the seat is in the seated state, and the optical axis of the sleep control light passes through the backrest when the seat is in the lying state.