Linear Luminaire Axial Profile Assembly and Sealing

Solution Overview

Problem

Existing linear lights face challenges in simplified assembly and effective sealing, particularly during outdoor installation, where ensuring tightness and ease of maintenance are crucial.

Innovation Solution

The design features an axially extending housing with optical and electrical elements as profiles that can be easily pushed in and braced transversely, with a receiving opening smaller than the combined cross-sectional area, allowing for a compact and secure assembly and maintenance system, including the use of spring elements and guide grooves for additional bracing and sealing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the housing is open on both sides to allow easy insertion of components, then assembly is simplified, but sealing against water and foreign bodies deteriorates

Engineering Contradiction:
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The housing is divided into a first housing part and a second housing part that can be separated. The first housing part remains fixed while the second housing part can be removed to access components. This segmentation allows the housing to maintain its sealed structure while enabling component replacement without compromising water and foreign body protection.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The electrical element and optical element are designed as profiles that can be inserted through the receiving opening and nested within the housing. The elements are arranged one behind the other in the axial direction, with the optical element positioned in front of the electrical element. This nesting approach allows compact arrangement while maintaining sealed housing structure.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Ease of operation

If a large receiving opening is provided for component insertion, then assembly is easier, but the housing becomes less compact and sealing area increases

Engineering Contradiction:
Core Design Contradiction:
Ease of operationVSVolume of stationary object

Solution Approach 1:

The housing is divided into two separable parts, allowing components to be inserted through a small receiving opening in the first housing part while the second housing part remains in place. This segmentation enables compact housing design without sacrificing component accessibility.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Components are arranged in the axial direction (one dimension) rather than requiring lateral access. The electrical element and optical element are positioned one behind the other along the axial direction, allowing insertion through a small opening while maintaining compact transverse dimensions.

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

3Reliability

If multiple separate assembly steps are used to ensure tight sealing, then sealing reliability improves, but assembly complexity and time increase

Engineering Contradiction:
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The housing parts, electrical element, and optical element are designed to assemble together in a integrated manner. The electrical element and optical element are inserted and fixed simultaneously through the receiving opening, and the housing parts are joined to seal the assembly. This merging of assembly steps reduces complexity while maintaining sealing reliability through the integrated design.

Inventive Principle:
Principle #5Merging (Combining)

4Stability of the object's composition

If components are firmly fixed in position to prevent rattling, then stability improves, but ease of replacement for maintenance deteriorates

Engineering Contradiction:
Core Design Contradiction:
Stability of the object's compositionVSEase of repair

Solution Approach 1:

The housing is divided into separable parts, with the second housing part serving as a removable cover. This segmentation allows components to be firmly fixed within the housing during operation to prevent rattling, while enabling easy access and replacement by simply removing the second housing part when maintenance is needed.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The electrical element and optical element are pre-arranged in specific positions within the housing during manufacturing. This preliminary positioning ensures stable component arrangement that prevents rattling during operation, while the modular housing design allows for straightforward replacement during maintenance without requiring complex disassembly procedures.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP3361141B1Linear luminaire and method for its assembly
Publication Date: 2020.07.29
  • EP3361141B1 patent drawingFigure 1
  • EP3361141B1 patent drawingFigure 2
  • EP3361141B1 patent drawingFigure 3

AI summary

The present invention relates to a linear lamp (1) with an axially extending housing (2, 3) in which an optical element (16) and an electrical element are accommodated. The optical element (16) is designed as a profile (7) approximately corresponding to the length of the housing (2, 3), and the electrical element is also designed as a profile (9). The profiles (7, 9) can be inserted axially into the housing (2, 3) via an end face and, in the installed state, are clamped against each other transversely to the axial direction. The invention further relates to a method for mounting this linear lamp (1).