Door Handle Light Pattern Projection for Status Display

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Solution Overview

Problem

Existing door handles with lights do not enhance the aesthetic appeal and fail to effectively convey information about the door's status.

Innovation Solution

A door handle with a shell that houses a light source and a window pattern, allowing the light to project a design onto the door, controlled by circuitry that uses sensors and a modulator to adjust lighting based on environmental conditions, enhancing both functionality and aesthetics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If a light source is added to the door handle, then the door status information can be conveyed, but the aesthetic appeal is not enhanced

Engineering Contradiction:
Improvedoor status informationVSAvoidaesthetic appeal
Core Design Contradiction:
Loss of informationVSShape

Solution Approach 1:

The patent employs different colored LEDs (red, green, blue) to indicate various door status conditions. The light emitting elements change color based on the door's state, providing clear visual information while the colored light patterns enhance the aesthetic appearance of the door handle and surrounding area.

Inventive Principle:
Principle #32Color changes

Solution Approach 2:

The patent projects light patterns onto the door surface, transforming the functional light indication into a two-dimensional visual display. This dimensional extension allows the light to serve both informational purposes and aesthetic enhancement by creating decorative patterns on the door.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Loss of information

If existing lights are used to convey door status, then information is transmitted, but the overall aesthetic of the door and handle is not enhanced

Engineering Contradiction:
Improvedoor status informationVSAvoidoverall aesthetic
Core Design Contradiction:
Loss of informationVSShape

Solution Approach 1:

The patent uses multiple colored LEDs that can be individually controlled to display different colors corresponding to different door status conditions. This color-coding system effectively communicates door status information while simultaneously creating visually appealing color patterns on the door surface.

Inventive Principle:
Principle #32Color changes

Solution Approach 2:

The light patterns are projected onto the door surface, extending the visual display from the three-dimensional handle to the two-dimensional door face. This creates an enhanced aesthetic effect by transforming the door surface into a display medium that combines functional information with decorative patterns.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 solution provides an aesthetically pleasing light pattern on the door while effectively conveying information through controlled lighting, improving the overall user experience and door handling functionality.

Implementation Method 1

A window pattern is positioned on the rear side of the shell such that the light source is operable to project onto the door a light pattern corresponding to the window pattern

Methodology Applied
Scientific EffectLight projection: Light

Data Source

PatentUS11339583B2Door-illuminating handle
Publication Date: 2022.05.24 SCHLAGE LOCK CO LLC
  • US11339583B2 patent drawing
  • US11339583B2 patent drawing
  • US11339583B2 patent drawing

AI summary

A door handle is configured for mounting to a door, and includes a shell having a front side and a rear side, with the shell defining an internal chamber. A shank extends from the rear side of the shell, and a light source is seated in the internal chamber. A window pattern is positioned on the rear side of the shell such that the light source is operable to project onto the door a light pattern corresponding to the window pattern.