Recessed Lighting Fixture Multi-Axis Adjustment

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Solution Overview

Problem

Existing in-ground and underwater lighting fixtures lack the ability to efficiently control the direction of illumination due to limited adjustability and accessibility of the lamp, making it difficult to achieve desired beam quality, color, and angle.

Innovation Solution

A recessed lighting fixture with a cylindrical housing that allows adjustment of the lamp assembly on multiple axes, featuring a U-shaped bracket and pivot points for axial and rotational adjustments, along with a watertight seal and baffle structure for glare reduction and water resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the lamp assembly is made fixed in traditional in-ground fixtures, then the fixture structure is simple and reliable, but the ability to control light beam direction and angle is limited

Engineering Contradiction:
Improvecontrol of light beam directionVSAvoidfixture structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The lamp assembly is designed with movable mounting brackets that allow dynamic adjustment of the lamp position and orientation. The fixture transitions from a static to a dynamic configuration, enabling the light beam direction and angle to be controlled by repositioning the lamp assembly along guided paths within the housing.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The lamp assembly is segmented into adjustable components including the lamp socket, mounting bracket, and positioning mechanisms. This segmentation allows independent adjustment of each component to achieve precise control over light beam direction while maintaining a relatively simple overall fixture structure.

Inventive Principle:
Principle #1Segmentation

2Ease of repair

If the lamp is made inaccessible in traditional fixtures, then the fixture structure is simple, but adjustment of beam quality, color, and angle becomes difficult

Engineering Contradiction:
Improveaccessibility of lampVSAvoidfixture structure
Core Design Contradiction:
Ease of repairVSDevice complexity

Solution Approach 1:

The fixture is designed with pre-configured access points and removable components that allow users to easily access the lamp assembly for adjustment or replacement. The mounting bracket and positioning mechanisms are arranged to facilitate straightforward maintenance operations without requiring complex disassembly procedures.

Inventive Principle:
Principle #10Preliminary action

3Ease of operation

If above-ground fixtures are used, then access to lamp for adjustment is easy, but the fixtures appear incongruous with surrounding vegetation and require expensive corrosion-resistant materials

Engineering Contradiction:
Improveaccess to lampVSAvoidaesthetic appearance and corrosion
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The fixture employs a nested design where the lamp assembly and adjustment mechanisms are housed within an in-ground housing that is concealed by landscaping. This allows easy access to the lamp through a removable access plate while maintaining an aesthetically pleasing appearance that blends with the surrounding environment and protects against corrosion.

Inventive Principle:
Principle #7Nested doll (Nesting)

Data Source

PatentUS7874709B1Recessed lighting fixture with multiple adjustment axes
Publication Date: 2011.01.25 HUNTER INDUSTRIES INC
  • US7874709B1 patent drawing
  • US7874709B1 patent drawing
  • US7874709B1 patent drawing

AI summary

The recessed fixture includes a cylindrical housing assembly that encloses a lamp assembly in a watertight enclosure. The lamp assembly includes an attachment base bracket attached to the interior of the housing, and a U-shaped bracket that is rotatably attached to the base bracket. The U-shaped bracket includes attachment means that permit vertical and angular adjustment of the lamp assembly relative to the axial center of the housing. The combination of the pivot points and the ability to rotate the lamp housing about the base bracket provides at least three axes of adjustability to permit variation of the character of light emitted from the fixture. A cover placed over the end of the housing seals a lens to the housing to produce a watertight seal. The cover may include a pattern of ridges and openings to form a baffle to further protect the lens, reduce glare and provide additional directional control of the emitted light. The cylindrical housing fits within a sleeve that is positioned generally flush with the surface in which the fixture is being recessed, allowing the fixture to be accessed for installation and maintenance.