Directional Wall-Mount Light Fixture for Pathway Illumination

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Solution Overview

Problem

Conventional security and convenience lighting systems that respond to animate object detection often inadvertently illuminate neighboring properties, causing annoyance and triggering false alarms in narrow pathways between properties.

Innovation Solution

A wall-mountable light fixture with directionally oriented light apertures that emit light substantially parallel to the wall, minimizing illumination of adjacent properties, and optionally adjustable within a limited range to optimize pathway lighting while avoiding neighbor disturbance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If conventional lighting systems illuminate the pathway in narrow alleys, then pathway illumination is provided, but light intrudes into neighboring properties causing annoyance and false alarms

Engineering Contradiction:
Improvepathway illuminationVSAvoidlight intrusion to neighboring properties
Core Design Contradiction:
Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The light fixture employs directionally oriented light apertures that emit light in specific directions (substantially parallel to the wall, at angles between 30-60 degrees from horizontal) to provide illumination locally to the pathway while avoiding neighboring properties. This creates different illumination qualities in different spatial zones - illuminated pathway versus protected neighbor areas

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The invention introduces directional control as a new dimension to light emission by configuring apertures at specific angles relative to the wall surface. This angular orientation creates a three-dimensional light distribution pattern that confines illumination to the pathway zone while preventing lateral intrusion into adjacent properties

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

2Object-affected harmful factors

If light is directed substantially parallel to the wall to avoid neighbors, then light intrusion is minimized, but pathway illumination coverage may be reduced

Engineering Contradiction:
Improvelight intrusionVSAvoidpathway illumination coverage
Core Design Contradiction:
Object-affected harmful factorsVSArea of stationary object

Solution Approach 1:

The light fixture divides the illumination task among multiple directionally oriented apertures, each responsible for illuminating a specific segment of the pathway. This segmentation allows the system to achieve comprehensive pathway coverage while maintaining directional control to prevent light intrusion into neighboring properties

Inventive Principle:
Principle #1Segmentation

3Illumination intensity

If multiple adjustable components are provided to optimize light direction, then pathway illumination can be optimized, but device complexity increases

Engineering Contradiction:
Improvepathway illumination optimizationVSAvoidadjustment mechanism complexity
Core Design Contradiction:
Illumination intensityVSDevice complexity

Solution Approach 1:

The light fixture incorporates adjustable components that allow the direction of light emission to be modified after installation. This dynamic adjustability enables optimization of pathway illumination coverage and angle without requiring complex mechanical systems, achieving adaptability through simplified adjustment mechanisms

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS8277071B2Wall-mountable light fixture providing light having a particular directionality
Publication Date: 2012.10.02 HEATHCO LLC
  • US8277071B2 patent drawing
  • US8277071B2 patent drawing
  • US8277071B2 patent drawing

AI summary

A path-illuminating wall-mountable light fixture (100) can comprise a wall-mountable support platform (101) that is configured and arranged to be installed on a wall (701) and at least a first light aperture (102) that is operably coupled to the wall-mountable support platform. This first light aperture is configured and arranged so that electrically-sourced light (110) emanating from the first light aperture is directed in a first direction that is substantially parallel to the wall, substantially non-perpendicular to the wall, and less than horizontal. When inclusive of a second such light aperture (104), the second light aperture can offer similarly oriented emanated light in a direction that is substantially the opposite of this first direction. By one approach, the light emanating from this (or these) light aperture(s) can be responsive to an animate object detector (107).