Deep-Drawn Lamp Housing for Heat Dissipation and Low-Cost Assembly

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Solution Overview

Problem

Existing high-bay luminaires with aluminum die-cast bodies are costly and require complex assembly due to multiple parts, leading to high material and installation expenses.

Innovation Solution

A trough-shaped luminaire housing manufactured via deep-drawing process, featuring a base and surrounding wall with integrated ring structures and channels for efficient heat dissipation and component storage, using blind hole structures for secure mounting and sealing to reduce material and assembly costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If an aluminum die-cast body is used for the luminaire housing, then heat dissipation and structural strength are improved, but material costs and manufacturing complexity increase

Engineering Contradiction:
Improveheat dissipationVSAvoidmanufacturing cost
Core Design Contradiction:
TemperatureVSEase of manufacture

Solution Approach 1:

The patent combines multiple housing components (base, side walls, rear wall, cooling fins, mounting structures) into a single deep-drawn metal housing. This integration eliminates the need for separate die-cast parts and their complex assembly, reducing manufacturing cost while maintaining heat dissipation effectiveness through the integrated cooling fin structures.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent replaces expensive aluminum die-cast housing with a more cost-effective deep-drawn metal housing. The deep-drawing process uses standard sheet metal and forming operations, which are generally less costly than precision die-casting, while still achieving the required structural integrity and thermal management.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

2Temperature

If an aluminum die-cast body with multiple parts is used, then heat dissipation and structural strength are improved, but assembly effort and installation time increase

Engineering Contradiction:
Improveheat dissipationVSAvoidassembly time
Core Design Contradiction:
TemperatureVSLoss of time

Solution Approach 1:

The patent integrates multiple housing components into a single deep-drawn housing structure, eliminating the need for assembling separate parts. The integrated design includes built-in mounting brackets, cooling fins, and structural elements that would otherwise require multiple components and assembly steps, thereby reducing installation time.

Inventive Principle:
Principle #5Merging (Combining)

3Stability of the object's composition

If ring structures are added to the base for component storage, then component organization and stability are improved, but manufacturing complexity increases

Engineering Contradiction:
Improvehousing stabilityVSAvoidhousing structure
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent integrates the ring structures as integral features of the deep-drawn housing base rather than separate components. These rings serve multiple functions: structural reinforcement, component mounting surfaces, and organizational elements for securing luminaire components. The deep-drawing process naturally forms these ring structures as part of the overall housing geometry, avoiding additional manufacturing steps.

Inventive Principle:
Principle #5Merging (Combining)

4Temperature

If channel-like recesses are created to connect ring structures, then thermal coupling and heat dissipation are improved, but manufacturing precision requirements increase

Engineering Contradiction:
Improvethermal couplingVSAvoidrecess precision
Core Design Contradiction:
TemperatureVSManufacturing precision

Solution Approach 1:

The patent creates the channel-like recesses as integral features of the deep-drawn housing base. These channels provide thermal pathways between ring structures and the base, enabling heat dissipation. The deep-drawing process forms these channels as natural consequences of the forming operation, avoiding the need for precision machining or post-processing that would increase manufacturing complexity.

Inventive Principle:
Principle #5Merging (Combining)

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 a cost-effective, stable, and efficient luminaire housing that effectively dissipates heat, protects components from external influences, and simplifies assembly while maintaining high lighting performance.

Implementation Method 1

a trough-shaped luminaire housing (10) manufactured using a deep-drawing process

Methodology Applied
Scientific EffectPlastic deformation: Plasticity

Implementation Method 2

thermal coupling to the housing is achieved, enabling heat dissipation necessary for reliable operation

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentEP3969804B1Trough-shaped lamp housing
Publication Date: 2026.03.11 ZUMTOBEL LIGHTING GMBH
  • EP3969804B1 patent drawingFigure 1
  • EP3969804B1 patent drawingFigure 2
  • EP3969804B1 patent drawingFigure 3

AI summary

The invention relates to a trough-shaped lamp housing (10) which is integrally produced in a deep-drawing process and has a housing bottom (11) and a housing wall (12) which laterally surrounds the housing bottom (11) and which, together with the housing bottom (11), delimits a lamp chamber, wherein the housing bottom (11) has a planar region (20, 25) for receiving at least one lamp component (120, 130) in a planar manner, wherein the flat region (20, 25) is peripherally surrounded by a raised and/or recessed annular structure (35) which is integrally formed in the deep-drawing process, and wherein the housing wall (12) discontinues at the peripheral edge thereof that faces away from the housing bottom (11), in a circumferentially closed edge portion (16) which lies in a plane.