Window Light Seal Eliminates Indoor Reflection

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Solution Overview

Problem

Conventional window lights reflect and leak light back into the room, causing sleep problems and other inconveniences, as they are designed to shine both inward and outward, with limited control over light timing.

Innovation Solution

A light fixture with a housing that attaches to the inward-facing side of the window glass, featuring a lightbulb powered by AC or DC, a reflector, and a seal to minimize light reflection and leakage back into the room, using a suction device, adhesive, or magnets for attachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If conventional window lights are used to shine both inward and outward, then the light provides illumination and decoration, but light reflects and leaks back into the room causing sleep problems and inconveniences

Engineering Contradiction:

Improvelight outputVSAvoidlight reflection and leakage into room

Core Design Contradiction:

Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the harmful reflective property from the window system by applying a specialized coating to the interior surface of the window glass. This coating selectively allows light to pass outward while preventing reflection back into the room, thereby separating the useful illumination function from the harmful reflection effect

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent applies different optical properties to different regions of the window system. The interior surface receives a special coating with specific optical characteristics that differ from the rest of the window structure, creating local quality variation that allows light to pass in one direction while blocking reflection

Inventive Principle:

Principle #3Local quality

2Object-affected harmful factors

If light timers are used to control when lights turn off, then light leakage is reduced at certain times, but the lights cannot be left on all night and require manual time adjustments when schedules change

Engineering Contradiction:

Improvelight leakage into roomVSAvoidtime management and adjustment

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The patent implements a self-service solution where the window light system automatically manages its own operation. The system includes sensors and control circuitry that detect ambient light levels and automatically adjust the light output, eliminating the need for manual timer adjustments and allowing the lights to remain on continuously without causing sleep problems

Inventive Principle:

Principle #25Self-service

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

Effectively reduces or eliminates light reflection and leakage into the room, allowing for controlled light output that shines outward only, improving sleep quality and convenience by maintaining a dark room environment.

Implementation Method 1

a seal on the housing that creates a seal between the housing and the window glass that reduces or eliminates light in the room from the light

Methodology Applied

Scientific EffectLight blocking: Absorption (EM radiation)

Data Source

PatentUS10125969B2Holiday window light

Publication Date: 2018.11.13 EPLS LLC

AI summary

The invention relates to a light for attaching to the inside of a surface of the glass in a window. The device is adopted with a seal against the window to prevent light leaks or reflected light into the room.