Flat Luminaire Mounting Channel for Versatile Ceiling Pendant Conversion

Solution Overview

Problem

Existing flat lamps have a disadvantageous design where the indirect light source is located at the top, increasing the overall height and limiting their versatility, making it difficult to convert between surface-mounted ceiling lights and pendant lights.

Innovation Solution

The lamp housing features a mounting channel with undercuts that accommodates the indirect light source and device mount, allowing for space-optimized arrangement of components without opening the housing, increasing flexural rigidity, and enabling easier conversion between lighting types.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the indirect light source is arranged on the top of the lamp housing, then the lamp can provide indirect lighting functionality, but the overall height increases and versatility is restricted

Engineering Contradiction:
Core Design Contradiction:
Adaptability or versatilityVSLength of stationary object

Solution Approach 1:

The mounting channel is integrated directly into the lamp housing structure, with the indirect light source nested within the channel rather than being mounted on the exterior top surface. This nesting approach allows the indirect lighting functionality to be incorporated without increasing the overall height of the lamp, thereby maintaining versatility while avoiding the height penalty of traditional designs

Inventive Principle:
Principle #7Nested doll (Nesting)

2Area of stationary object

If the lamp housing is made longer to illuminate larger areas, then the illumination coverage increases, but the structural rigidity decreases and reinforcements are needed

Engineering Contradiction:
Core Design Contradiction:
Area of stationary objectVSStrength

Solution Approach 1:

The mounting channel has a U-shaped cross-section with curved boundaries formed by side walls extending downward from the top surface. This curved geometry provides structural reinforcement that increases the area moment of inertia, allowing longer lamp housings to maintain adequate rigidity without requiring additional reinforcement elements, thus enabling larger illumination coverage while preserving structural integrity

Inventive Principle:
Principle #14Spheroidality (Curvature)

3Length of stationary object

If components are arranged inside the lamp housing, then the overall height is reduced, but accessibility for mounting and maintenance is restricted

Engineering Contradiction:
Core Design Contradiction:
Length of stationary objectVSEase of operation

Solution Approach 1:

The mounting channel is designed with its opening accessible from the exterior top surface of the lamp housing, allowing the indirect light source and other components to be self-installed and self-maintained without requiring disassembly of the housing. This self-service design enables compact component arrangement that reduces overall height while maintaining ease of access for mounting and maintenance operations

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

This design allows for longer luminaire housings to be suspended without reinforcements, provides accessible component mounting, and enhances the lamp's structural integrity and versatility, enabling seamless conversion between ceiling and pendant light configurations.

Implementation Method 1

The mounting channel preferably has undercuts, which not only further increase the area moment of inertia, but can also be used as holders for lamp components

Methodology Applied
Scientific EffectArea moment of inertia: Moment of Inertia

Data Source

PatentEP3270047B1Flat light
Publication Date: 2020.02.05
  • EP3270047B1 patent drawingFigure 1~2
  • EP3270047B1 patent drawingFigure 3~5
  • EP3270047B1 patent drawingFigure 6~7

AI summary

The invention relates to a flat luminaire comprising a luminaire housing 2 with a housing top facing a building structure, which defines a housing plane, and a housing bottom comprising a light emission opening designed for the emission of a direct luminous flux for the direct illumination of a visual task. The luminaire housing 2 is also designed to accommodate a direct light source, which emits the direct luminous flux generated by it directly onto the visual task via an optical system, and additionally has an indirect light source which emits an indirect luminous flux radiating in the opposite direction to the direct luminous flux to generate indirect illumination. Finally, a gear tray 4 for accommodating further luminaire components is arranged on the housing top. To optimize orTo reduce the overall height, it is proposed that the luminaire housing 2 be designed as a flat housing which has a significantly greater width than height, that the luminaire housing 2 include a mounting channel 2.2 on the top of the luminaire housing, and that the mounting channel 2.2 is designed to partially accommodate the gear carrier 4.